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With determination of traffic speed

Subclass of:

701 - Data processing: vehicles, navigation, and relative location

701001000 - VEHICLE CONTROL, GUIDANCE, OPERATION, OR INDICATION

701117000 - Traffic analysis or control of surface vehicle

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
701119000 With determination of traffic speed 89
20130030681METHOD AND APPARATUS FOR UPDATING TRAVEL TIME ESTIMATION - A self-contained vehicular traffic travel time information system for a vehicle in an inter-vehicle ad-hoc network includes an on-board vehicular broadcasting unit for communicating with other vehicles within the inter-vehicle ad hoc network. A positioning device identifies the vehicle's position throughout a course of travel. An on-board vehicle processing unit stores road segments throughout the vehicle path of travel. The on-board vehicle processing unit determines a starting position and an ending position for each respective road segment. A length of time for traveling through each respective road segment is determined. A memory storage device stores the segmented road portions and the time of travel associated with each respective road segment. The on-board vehicular broadcasting unit disseminates the determined travel times of recently traveled road segments via a broadcast message to other vehicles within the inter-vehicle ad hoc network.01-31-2013
20120179358SYSTEM AND METHOD FOR AUTOMATED UPDATING OF MAP INFORMATION - The characteristics of two intersecting roadways are compared to determine whether an inference can be made as to whether there are traffic controls (e.g., stop signs) on one of the roadways. If a larger road with characteristically higher speed intersects with a small road with lower speed, the small road is determined to have a stop sign. A map database is updated with the information regarding the inferred traffic control, and that information is then usable for purposes such as trip planning.07-12-2012
20110202266REPRESENTATIVE ROAD TRAFFIC FLOW INFORMATION BASED ON HISTORICAL DATA - Techniques are described for automatically analyzing historical information about road traffic flow in order to generate representative information regarding current or future road traffic flow, and for using such generated representative traffic flow information. Representative traffic flow information may be generated for a variety of types of useful measures of traffic flow, such as for average speed at each of multiple road locations during each of multiple time periods. Generated representative traffic flow information may be used in various ways to assist in travel and for other purposes, such as to determine likely travel times and plan optimal routes. The historical traffic data used to generate the representative traffic flow information may include data readings from physical sensors that are near or embedded in the roads, and/or data samples from vehicles and other mobile data sources traveling on the roads.08-18-2011
20100076671METHOD FOR PROVIDING A TRAFFIC PATTERN FOR NAVIGATION MAP DATA AND NAVIGATION MAP DATA - Methods and systems for providing a traffic pattern for a road segment of navigation map data on the basis of time series traffic data is provided. Reference time series are determined for the road segment to use to approximate the time series traffic data. A weighted combination of the reference time series is determined by determining weighted coefficients that determine how much a predetermined reference time series contributes to the combination of the reference time series for approximating the time series traffic data. The time series traffic data is then approximated using the weighted combination of the reference time series. The determined weighting coefficients are then linked to the road segment of the navigation map data.03-25-2010
20100100307Universal GPS Traffic Monitoring System - A traffic data collection process and monitoring system that uses a plurality of GPS enabled mobile devices to transmit near at real-time traffic direction and speed information to a server and or/at real-time (sub 10 second latency). The sever processes the information thereby reducing the computational load and power consumption of the mobile devices. The system uses a Traffic Pattern Recognition software program that accurately recognizes only valid traffic data while filtering out unwanted traffic data. The system creates a Distributed Traffic Data Store database containing the average speeds for designated traffic monitoring points created for the region. During use, a request for traffic data containing the boundary data and the zoom level is sent from the mobile device to the server. The server then reviews the requests and determines with specific Distributed Traffic Data Store database contains the information. The server then creates a compressed file containing the traffic information relevant to the TMPs in the request and sends it to the mobile device.04-22-2010
20090132156Apparatus for Monitoring Traffic - A personal traffic congestion avoidance system for drivers of motor vehicles traveling on roadways in motor vehicles with GPS-based navigational systems. The system includes a GPS-based navigational system that includes a GPS receiver connected to a visual display, a map database and a wireless communication device for communicating with a remote computer over a wireless communication network. The GPS-based navigation system continuously determines the motor vehicle exact physical location in a region that is intermittently or continuously uploaded to a remote computer via the wireless communication network. The remote computer is connected to a traffic monitoring service that provides current traffic congestion information thereto. When a traffic congestion event is in the designated vicinity of the current location of the motor vehicle or on a roadway that may affect the traffic on the roadway on which the motor vehicle is traveling, a warning is generated and delivered to the GPS-based navigational system. The driver may ignore the warning or take an alternative route to avoid the traffic congestion.05-21-2009
20100094531Personalized traffic reports - A method and system are disclosed for providing personalized traffic reports. A personalized traffic report is a relatively short, audio-visual presentation that includes an audio narrative by an announcer describing the traffic conditions along a user's selected route, synchronized with a video presentation that includes maps with animations showing the traffic conditions and a visual representation of the announcer. A traffic data services provider determines traffic conditions that pertain to a user's identified particular route, i.e. from an origin to a destination. Then, the traffic data services provider forms an audio-video file that includes an audio narrative in the voice of an announcer that describes the traffic conditions along the user's route, along with a visual map representation of the user's route, a graphical indication of the traffic conditions along the route, and a visual representation of the announcer. The traffic data services provider transmits the audio-video file of the personalized traffic report to the user, who then plays it back on a computing device.04-15-2010
20130073193COLLABORATIVE TRAFFIC MONITORING - A collaborative traffic monitoring method is described. In an embodiment, a collaborative traffic monitoring system for use in a vehicle comprises an input for receiving GPS location data and a processing unit which generates speed data for a vehicle based on the received GPS location data. The system also includes a transmitter which broadcasts the speed data and a receiver which receives speed data broadcast by other vehicles. The received speed data is then used to display an indication of the road speeds ahead.03-21-2013
20130066542INTELLIGENT LASER TRACKING SYSTEM AND METHOD FOR MOBILE AND FIXED POSITION TRAFFIC MONITORING AND ENFORCEMENT APPLICATIONS - An intelligent laser tracking system and method for mobile and fixed position traffic monitoring and enforcement applications. The system disclosed herein can autonomously track multiple target vehicles with a highly accurate laser based speed measurement system or, under manual control via a touch screen, select a particular target vehicle of interest. In a mobile application the police vehicle speed is determined through the OBD II CAN port and updated for accuracy though an onboard GPS subsystem. The system and method of the present invention simultaneously provides both narrow and wide images of a target vehicle for enhanced evidentiary purposes. A novel, low inertia pan/tilt mechanism provides extremely fast and accurate target vehicle tracking and can compensate for geometrical errors and the cosine effect.03-14-2013
20080294331Method of Estimation of Traffic Information, Device of Estimation of Traffic Information and Car Navigation Device - There is provided a method and a device for accurately estimating traffic information of a link having no traffic information even if different types of roads are mixed. The device finds a parameter characterizing a damping curve of a quantity of change of relative speed based on stored traffic information for links on a city center side on a minimum-time cost route connecting the city center and suburbs, finds a quantity of change of relative speed of the link having no observed traffic information and estimates its traffic information based on the damping curve. The device also calculates a ratio of quantities of change of relative speed of two links whose road types change as a speed change similarity ratio and estimates traffic information of the link of a second road type from known traffic information of the link of a first road type by using that ratio.11-27-2008
20110288758MANAGEMENT OF TRAFFIC SIGNALS AT ROAD INTERSECTION TO AVOID BLOCKING VEHICLES - A computer controlled system for managing traffic signals at the intersection of at least two traffic lanes to avoid collisions between motor vehicles in intersecting lanes. An implementation with means for controlling traffic signals at the intersection to permit vehicles in each of the intersecting traffic lanes a time period to pass through the intersection, means for detecting the presence of a vehicle in the intersection beyond said permitted time period, and means responsive to a detection of the presence of the vehicle, for controlling the traffic signals to stop other vehicles from passing through the intersection.11-24-2011
20110288757INFORMATION FILTERING AND PROCESSING IN A ROADWAY TRAVEL DATA EXCHANGE NETWORK - A traffic monitoring system includes one or more processors operable to collect location data from a third-party network having a mobile user, weight at least one element of the location data based on reliability, and generate traffic speed data at a roadway location based on the weighted data. The third-party network is one of a mobile communication network, a computer network, a television network, a radio network, and a road sign display network. The one or more processors are operable to deliver the traffic speed data at the roadway location to an alternate third-party network. The alternate third-party network is one of a mobile communication network, a computer network, a television network, a radio network, and a road sign display network.11-24-2011
20090281714Traffic Congestion Estimation Based on Motion of Cellular Devices - A mechanism for estimating the traffic congestion is invented. The mechanism relies on information about the motion of cellular devices on roads. The existing information about the motion of cellular devices is used to estimate the motionability of upcoming traffic. The system can be used to issue traffic warnings, redirect traffic to non-congested routes and derive traffic statistics for research and development.11-12-2009
20090143967Motor Vehicle Having a Wheel-View Camera and Method for Controlling a Wheel-View Camera System - A motor vehicle has a wheel-view camera with a wide-angle lens and an image sensor. The wheel-view camera is mounted in the housing of a side view mirror and points in a downward direction such that the wheel-view camera captures a front wheel. An image processing unit is operatively connected to the wheel-view camera unit for receiving image data from the wheel-view camera. The image processing unit is configured to process the image data such that the image processing unit performs a wide-angle lens correction, an image rotation and a viewpoint conversion. A display unit is operatively connected to the image processing unit. The display unit receives processed image data from the image processing unit and displays an image of the front wheel.06-04-2009
20100036595METHOD AND SYSTEM FOR TRANSMITTING DATA TO A TRAFFIC INFORMATION SERVER - A method for transmitting data to a traffic information server includes obtaining, at a mobile vehicle, data including at least one of a vehicle speed and a vehicle location at a then-current time, and determining whether the data is redundant. Determining whether the data is redundant may be accomplished by at least one of comparing the data with other data previously transmitted to the traffic information server from an other mobile vehicle or determining whether the data falls within an expected range for a predetermined time interval. The method further includes transmitting the data, via a wireless communication system, to the traffic information server from the mobile vehicle if the data is determined to be non-redundant. Also disclosed herein is a system to perform the method.02-11-2010
20100268445FLEET MAINTENANCE METHOD AND IN-VEHICLE COMMUNICATION SYSTEM - A fleet maintenance method for generating a suggested speed for each vehicle in a fleet to maintain the vehicle in the fleet is provided. In the fleet maintenance method, vehicles are clustered into a plurality of sub-fleets, and in each sub-fleet, one vehicle is selected as a leader vehicle and the other vehicles are considered as member vehicles. Besides, a position coordinate and a speed of each vehicle in each sub-fleet are obtained, and the position coordinate is converted into a corresponding linear coordinate. In addition, a sub-fleet gravity center of each sub-fleet and a fleet gravity center of the entire fleet are calculated according to the linear coordinates. Moreover, a suggested speed of each leader vehicle is generated according to a gravity center distance of the leader vehicle, and a suggested speed of each member vehicle is generated.10-21-2010
20120035840VEHICLE SPEED MONITOR - A vehicle speed monitor for monitoring the speed of a moving vehicle is provided to the vehicle at an entrance to a road. The vehicle speed monitor records instantaneous accelerations of the vehicle along three axes over time. The vehicle speed monitor may be implemented as a contact or contactless integrated circuit (IC) card. The vehicle speed monitor is returned at an exit from the road, and scalar instantaneous speeds of the vehicle are determined from the recorded instantaneous accelerations in the vehicle speed monitor. The scalar instantaneous speeds are compared to one or more speed limits between the entrance and the exit to determine any speed limit violation. The vehicle speed monitor may also function as an electronic toll card where a toll is determined from the entrance and the exit. At the exit, the driver of the vehicle is charged with a fine and a toll, if any.02-09-2012
20090287405TRAFFIC DATA QUALITY - Techniques are described for traffic data quality. In an implementation, an electronic device provides a variety of functionality including functionality to determine position. The device may use determined position to ascertain geographic locations as collection points where traffic related data may be collected. In at least some embodiments, traffic data quality techniques combining both device side and server side technique are applied to data collected at the collections points. In an embodiment, communication of collected data by the device may be delayed to enable additional observations of vehicle movement, routing, position, and so forth. The additional observations during the delay enable the device to determine the validity of the collected data.11-19-2009
20100211300SYSTEM AND METHODS FOR GEOBOUNDARY BASED TRAFFIC MONITORING USING QUICK TEAR DOWN BOUNDARIES - A location based service and method configured to provide a mechanism for delivering traffic information to a subscribing user. The method is implemented on a computing infrastructure and includes setting up geo-boundaries at one or more predefined intervals. The method further includes receiving a signal from an active mobile device as it passes at least two of the geo-boundaries at the one or more predefined intervals, and determining a traffic incident from the received signal.08-19-2010
20120296560Inferring a Behavioral State of a Vehicle - Trajectory data representing tracked positions of a vehicle along a trajectory having a start and end point is accessed. The trajectory data may include spatio-temporal information about the vehicle at different points along the trajectory. The trajectory may be divided into segments based, at least in part, on knowledge of inferred-parking locations. The segments may be map-matched to corresponding road segments. Additionally, historical data representing spatio-temporal travel patterns of vehicles learned from historical trajectories of vehicles corresponding to the map-matched-road segments may also be accessed. A behavioral state of the vehicle for a segment or position within a segment may be inferred, based at least in part, on (i) the vehicle's spatio-temporal information corresponding to the segment or position within a segment, (ii) knowledge of the map-matched-road segment, and (iii) the historical data.11-22-2012
20120296561USER INTERFACE METHOD FOR TERMINAL FOR VEHICLE AND APPARATUS THEREOF - A user interface method for a terminal for a vehicle is provided. The terminal obtains position information to detect a point of a road. A road image of a driving direction is obtained, a lanes of the road represented on the obtained road image is recognized, and a point of a road and lane in which the vehicle having the terminal arranged therein is detected. A virtual road image regarding the recognized lanes is generated, and the generated virtual lanes are added to the road image of the driving direction of the vehicle, and displayed. Traffic information for each lane and surrounding information (i.e. lane closure, construction, accident, etc.,) at the detected point of the relevant road are obtained, and the obtained information is displayed for each virtual lane.11-22-2012
20080270015Traffic situation determination systems, methods, and programs - Traffic situation determination systems, methods, and programs acquire a current position of the vehicle based on a radio signal received from a GPS satellite and determine a first travel path of the vehicle based on the acquired position of the vehicle. The systems, methods, and programs determine whether a road on which the vehicle is traveling has a traffic jam. If the road on which the vehicle is traveling has a traffic jam, the systems, methods and programs transmit first information relating to the first travel path from the vehicle to an information center. The systems, methods, and programs receive second information relating to a second travel path of the vehicle, the second information being received from a mobile phone communication center and being based on a mobile phone signal received by the mobile phone communication center. The systems, methods, and programs determine a road corresponding to the first travel path as having a traffic jam and determine a road corresponding to the second travel path, and not corresponding to the first travel path, as having no traffic jam.10-30-2008
20090138190System and Method of Providing Traffic Data to a Mobile Device - A traffic data server wirelessly provides relevant traffic details to mobile subscribers at minimal data transmission, while supplying enough data for re-routing and detouring. Two-way wireless data connectivity allowing the server to know what data the mobile device has received in the past, allows the server to send, to a mobile device, only data that is necessary, i.e. updates to mobile users that are small data sets comprising the change in the previously received data to the current data.05-28-2009
20090326791LOCAL DECISION POLICIES ABOUT THE SHARING OF SENSED DATA THAT ENHANCE PRIVACY AND LOWER COMMUNICATION COSTS FOR SERVICES THAT AGGREGATE DATA FROM PERSONAL DEVICES - Velocity information can be beneficial to various entities including other vehicles and a central traffic monitoring and routing system. Vehicles with sensors can serve as velocity probes to update speeds that are shared via a more global service. However, individuals may be reluctant to provide location and velocity information given privacy preferences. Local policies about sharing personal data are described that can be harnessed to enhance privacy while minimizing communication costs. The local data-sharing policies allow devices to monitor their own speeds and locations and to employ models and analyses that determine the value of sharing flow information with a larger service in accordance with privacy preferences, and to make local decisions as to when to respond to broadcasted queries for specific information, while minimizing the redundancy of signals from multiple vehicles.12-31-2009
20110224893LEARNING ROAD FEATURE DELAY TIMES BASED ON AGGREGATE DRIVER BEHAVIOR - Techniques are described for generating and using information regarding road traffic in various ways, including by obtaining and analyzing road traffic information regarding actual behavior of drivers of vehicles on a network of roads. Obtained actual driver behavior information may in some situations be analyzed to determine actual delays for vehicles encountering various particular road features in the network of roads, such as for identified decision points at which drivers face choices corresponding to possible alternative routes through the network of roads (e.g., intersections, highway exits and/or entrances, etc.) and/or for other traffic flow impediments. The identified and determined information from the analysis may then be used in various manners, including in some situations to assist in determining particular recommended or preferred routes of vehicles through the network of roads based at least in part on actual driver behavior information.09-15-2011
20090082950System for transmitting, processing, receiving, and displaying traffic information - A system for sharing and processing traffic information includes a number of traffic information computer systems within individual vehicles and a traffic information server system. The traffic information computer systems are each connected to the server system through a network, which are additionally connected to one another by peer-to-peer radio communications, and which each operate with a database for displaying road maps, with a database storing average speed data for directions of travel along roadways, and with a location sensor used to determine the location and average speed of the vehicle, which are transmitted to the server. The server returns average speed data for road segments, which is displayed on the road maps.03-26-2009
20090082949METHOD AND SYSTEM FOR AUTOMATICALLY DIRECTING TRAFFIC ON A SITE - In a method for automatically directing traffic on a site, information is received regarding a plurality of selected entities on the job site. An indication of a first priority assigned to a first of the plurality of selected entities is received. An indication of a second priority assigned to a second of the plurality of selected entities is received. It is then determined that the first of the plurality of selected entities has a right of way over the second of the plurality of selected entities based upon a comparison of the first priority and the second priority.03-26-2009
20080262711SYSTEM AND METHOD FOR DETERMINING TRAFFIC CONDITIONS - The present invention provides a method and apparatus for determining traffic conditions using wireless devices. A number of signals from the vehicles traveling in selected routes are received by several wireless communication networks via the wireless devices. The total number of signals received are used to compare if there are sufficient number of vehicles traveling on the selected routes. If so, then the location information of the moving vehicles at various times is determined by the wireless communication network and forwarded to a central computer. The central computer coordinates with the wireless communications network for information needed to compute traffic data. The central computer computes the velocity of the moving vehicles and a traffic profile is created based on the velocity and location information of the moving vehicles. Furthermore, the traffic profile is sent to the moving vehicles.10-23-2008
20090210141Monitoring a Mobile Device - Devices, systems, and methods for monitoring traffic, such as vehicle traffic on a roadway, using identification information acquired using a Bluetooth protocol. A sensor is configured to scan for discoverable Bluetooth devices within a flow of vehicle traffic and to create a log of identified Bluetooth devices. A system includes multiple sensors at known locations along a route and is operable to identify a Bluetooth device identified at multiple sensors.08-20-2009
20100185382DISPLAYING ROAD TRAFFIC CONDITION INFORMATION AND USER CONTROLS - Techniques are described for displaying or otherwise providing information to users regarding various types of road traffic condition information in various ways. The information may be provided, for example, as part of a user interface (or “UI”), which may in some situations further include one or more types of user-selectable controls to allow a user to manipulate in various ways what road traffic condition information is displayed and/or how the information is displayed. A variety of types of road traffic condition information may be presented to users in various manners, including by presenting information on graphically displayed maps for geographic areas to indicate various information about road conditions in the geographic area. In addition, provided controls may allow users to select particular times, select particular routes, indicate to perform animation of various types of changing traffic conditions over a sequence of multiple successive times, etc.07-22-2010
20100228467Traffic Flow Model to Provide Traffic Flow Information - Examples of maintaining or querying a traffic database to generate a traffic flow model to provide traffic flow information and determine a per-lane route for a vehicle to travel are disclosed.09-09-2010
20100114467SYSTEM AND METHOD FOR DETERMINING A COLLISION STATUS OF A VEHICLE - A system and method are provided to determine the collision status of a nearby vehicle or vehicles. If a nearby vehicle has been in a collision, responsive systems may be triggered automatically. Responses may include warning the driver of the host vehicle and/or warning drivers of other vehicles or centralized networks by, among other methods, V2V or V2I communications. Responses may also include automatically triggering countermeasures in the host vehicle.05-06-2010
20090112453METHOD OF PROVIDING DIRECTION INFORMATION ACCORDING TO REAL-TIME TRAFFIC CONDITIONS - A method, device and recorded medium having recorded the method, for providing directions information applied with real-time traffic condition reports are disclosed. An aspect of the present invention features a method and device that can receive traffic condition reports in real-time and provide directions information applied with the pertinent traffic condition reports. Accordingly, with the present invention, the directions information can be generated by using first real-time traffic condition reports. Then, the path directions applied with the change of traffic condition reports according to the time flow can be acquired and provided to a user.04-30-2009
20110112748SYSTEM AND METHOD FOR EXCHANGING POSITIONING INFORMATION BETWEEN VEHICLES IN ORDER TO ESTIMATE ROAD TRAFFIC - The present invention discloses a method, system and computer program embarked in a vehicle, for estimating traffic conditions based on positioning information exchanged with other vehicles using wireless communication. A method in accordance with an embodiment of the invention includes: receiving positioning information repeatedly broadcast by at least one vehicle, the positioning information for each vehicle including: information related to a current location of the vehicle; and information identifying the vehicle; calculating based on at least two successive locations of a same identified vehicle, a current speed and a current direction for the vehicle; and estimating current traffic conditions based on current location, speed and direction of identified vehicles.05-12-2011
20110035139System for Monitoring Vehicle Use - A system for monitoring of vehicles and particularly heavy vehicles and their compliance with specific network (e.g. road) access conditions uses vehicle telematics solutions. The system includes an in-vehicle unit (IVU) associated with a vehicle being monitored. The IVU includes a receiver for receiving positioning signals, a processor for processing a time-marked log of vehicle data, a storage element for storing the time-marked log and a first wireless communication element for communicating time marked data to a Service Provider (SP) processing apparatus. One or more Service Providers operate Service Provider (SP) processing apparatus. The SP processing apparatus include a SP wireless communication element for receiving time-marked data from one or more IVUs and a SP processor for processing received data. The SP processor is adapted to compare received data from the time-marked log of a vehicle with one or more vehicle-use conditions applicable to that vehicle, and to generate a non-compliance report where the comparison indicates that non-compliant activity has occurred. A SP storage element stores non-compliance reports and relevant time-marked data.02-10-2011
20110035141DISPLAYING ROAD TRAFFIC CONDITION INFORMATION AND USER CONTROLS - Techniques are described for displaying or otherwise providing information to users regarding various types of road traffic condition information in various ways. The information may be provided, for example, as part of a user interface (or “UI”), which may in some situations further include one or more types of user-selectable controls to allow a user to manipulate in various ways what road traffic condition information is displayed and/or how the information is displayed. A variety of types of road traffic condition information may be presented to users in various manners, including by presenting information on graphically displayed maps for geographic areas to indicate various information about road conditions in the geographic area. In addition, provided controls may allow users to select particular times, select particular routes, indicate to perform animation of various types of changing traffic conditions over a sequence of multiple successive times, etc.02-10-2011
20110035140Vehicle sensing system utilizing smart pavement markers - A roadway system is described, consisting of enhance, smart pavement markers. These smart pavement markers contain elements such as motion sensors, solar cells, radio receiver/transmitters, active lighting and processing capability. These markers can be configured in many ways, including as vehicle speed sensors, and information display systems. Such pavement marker systems can be installed with little or no roadway infrastructure preparation and may be useful for traffic data collection, law enforcement, and vehicle safety applications.02-10-2011
20080234922Traffic-jam state calculation systems, methods, and programs - Systems, methods, and programs obtain probe information, the probe information comprising an average speed of probe cars traveling on each of a plurality of links in a predetermined area. The systems, methods, and programs detect, for each of the plurality of links, a first degree of a traffic jam corresponding to the link for each of a plurality of different thresholds by comparing the average speed with each of the thresholds. The systems, methods, and programs obtain traffic-jam information concerning the plurality of links, the obtained traffic information comprising a second degree of the traffic jam corresponding to each of the plurality of links. The systems, methods, and programs compare, for each of the plurality of links, the second degree of the traffic jam with the first degree of the traffic jam for each of the thresholds. The systems, methods, and programs select, for the predetermined area, a threshold from the plurality of thresholds for which the first degree of the traffic jam most matches the second degree of the traffic jam and utilize the selected threshold to determine a severity of the traffic jam for each of the plurality of links.09-25-2008
20110160989Route Calculation Method For A Vehicle Navigation System - Traffic information, including flow information and incident information, obtained through a traffic management system for providing and facilitating the exchange of traffic information between a remote location and a vehicle may be used in route calculation by a navigation device. The navigation device may recalculate a route based on anticipated user error. Alternatively, the navigation device may recalculate a route using received traffic information triggered by the receipt of a traffic information update, or triggered by the passage of an amount of time. The broadcast rate of traffic information updates may vary temporally (providing more frequent updates during peak commute times) or geographically (providing more frequent updates to metropolitan areas with increased traffic information needs). If route calculation is triggered by an elapsed amount of time, the amount of time may vary to be shorter during peak commute times. Additional route calculation techniques allow the incorporation of historical traffic information or the use of the most recent traffic information if incomplete traffic information is available. Still further route calculation techniques may calculate a best route by avoiding zigzagging or evaluating an assigned cost of a potential route.06-30-2011
20110160988SYSTEM AND METHOD FOR FASTER DETECTION OF TRAFFIC JAMS - Devices located with moving objects (e.g., people or cars) can function as probes of traffic conditions. One way that such probes can operate is by making sporadic reports (e.g., for example, after a given road segment is traversed, a report can be made). However, in such a reporting scheme, a traffic incident that prevents or delays completion of that road segment would go unreported until the probe finished the segment. Thus, these aspects provide methods and systems to detect unexpected conditions that prevent/delay completion of such road segments, and responsively generate an out-of-cycle report that can be used in alerting others of such condition. Progress on that segment can continue to be monitored, with periodic updates, when the segment ultimately is finished, the probe can send a final report for that segment. The report can contain data indicative of an average speed on the road segment (or the portion of it completed, when detecting an unexpected condition).06-30-2011
20090240424Open community model for exchanging information in dynamic environments - An open community model for information exchange enables individuals to plan and attain superior outcomes in a dynamic environment. A continually “world model” maintains information about the dynamic environment that is valuable for individuals of the open community. An open community model application publicizes a specification of relevant types of information it receives from suppliers and provides to consumers. Suppliers provide information consistent with the specification. Consumers utilize received information to reduce uncertainties or errors in the assumed environment so they can generate improved plans or improve their expected outcomes. Consumers give feedback to the open community model about the quality of information they received. A “world model” application combines information received to update and improve its understanding of the dynamic environment and its estimates of relevant parameters. The community model simplifies the creation and operation of information markets where innovative products are naturally selected and economically reinforced.09-24-2009
20090118996System and method for determining a prediction of average speed for a segment of roadway - The present invention provides a system and method for determining the necessary departure time to allow for an on-time or desired arrival time at a particular location over a particular route based on the evaluation of historic, present, and predicted road conditions.05-07-2009
20110004397TRAVELING INFORMATION CREATING DEVICE, TRAVELING INFORMATION CREATING METHOD AND PROGRAM - A CPU of a navigation device transmits probe information including link traveling information and average vehicle speed information at every predetermined time to an information distribution center. On the other hand, when receiving the probe information, a CPU of the information distribution center reads the road type corresponding to each link ID and user's average vehicle speed during uncongested road traveling from the probe information, and determines the vehicle speed region corresponding to this link ID from a vehicle speed region determination table. Thereafter, the CPU of the information distribution center creates traffic information from this vehicle speed region and the probe information, stores it in a center side traffic information DB and statistically processes traffic information of a certain period to generate a link cost corresponding to a link ID and a time zone of a relevant vehicle speed region of statistical traffic information.01-06-2011
20110054767Computer-implemented method for ensuring the privacy of a user, computer program product, device - A computer-implemented method and product ensures the privacy of a user and the utility of data communicated by a device, such as a vehicle telematics device, to a server, comprising receiving data at the device during the time period; processing, by the device, the received data; summarizing, by the device, the processed data in a matrix, wherein the rows and columns of the matrix define circumstances of movement of the device, wherein the matrix includes a plurality matrix-entries, and wherein each matrix-entry includes a distance covered by the device during the time period under a pair of said predefined circumstances of movement; and transmitting the summarized data from the device to the server.03-03-2011
20110098909SYMMETRIC AND INTERLOCKED REGIONAL TRAFFIC LIGHT CONTROL METHOD - A regional symmetric and interlocked traffic light control method includes: defining a first preferred point in a desired metropolitan area; determining a first axial average vehicle speed and a first axial preferred allowed travel time period for the first axial streets and a second axial average vehicle speed and a second axial preferred allowed travel time period for the second axial streets; obtaining a first vehicle travel distance and a second vehicle travel distance; determining a first control region according to the first preferred point, the first vehicle travel distance and the second vehicle travel distance; defining a second preferred point and a third preferred point adjacent to the first control region; controlling a plurality of traffic lights in the two adjacent control regions to respectively display green and red lights on the same axial streets in accordance with a preferred allowed travel time period and linking the traffic lights in said control regions by serializing. Therefore, a vehicle can pass through a plurality of adjacent control regions in accordance in its cruising speed and the traveling efficiency of the vehicle can be improved.04-28-2011
20110137545OBTAINING ROAD TRAFFIC CONDITION DATA FROM MOBILE DATA SOURCES - Techniques are described for assessing road traffic conditions in various ways based on obtained traffic-related data, such as data samples from vehicles and other mobile data sources traveling on the roads, as well as in some situations data from one or more other sources (such as physical sensors near to or embedded in the roads). The assessment of road traffic conditions based on obtained data samples may include various filtering and/or conditioning of the data samples, and various inferences and probabilistic determinations of traffic-related characteristics of interest from the data samples. In some situations, at least some of the mobile data sources are configured to frequently acquire and store data samples, and to occasionally make multiple such data samples available together for use in the road traffic condition assessment (e.g., by acquiring a data sample every minute and by transmitting a group of stored data samples every 15 minutes).06-09-2011
20100324806TRAVEL PATTERN INFORMATION OBTAINING DEVICE, TRAVEL PATTERN INFORMATION OBTAINING METHOD, AND TRAVEL PATTERN INFORMATION OBTAINING PROGRAM - Vehicle speed identification information for identifying vehicle speed of a vehicle on a road is obtained for a plurality of vehicles. Based on a distribution of the vehicle speed identification information, the vehicle speed identification information is classified into groups corresponding to motions of the vehicle. An occurrence probability of a motion of the vehicle is obtained based on the classification.12-23-2010
20090125220METHOD AND SYSTEM FOR MEASURING TRAFFIC INFORMATION IN CDMA NETWORK - A method for measuring traffic information, conducted by a traffic information analyzing device interworking with a radio operating device connected to BSS (Base Station Subsystem) of a synchronous CDMA (Code Division Multiple Access) network or RNC (Radio Network Controller) of an asynchronous WCDMA (Wideband Division Multiple Access) network, includes acquiring a location information message of MS (Mobile Station), which is provided from the BSS or RNC and stored in the radio operating device; analyzing location information of the MS by utilizing the location information message; and calculating traffic information of the MS including a moving speed of each measurement region by using the analyzed location information.05-14-2009
20110307166METHOD FOR COMPUTING AN ENERGY EFFICIENT ROUTE - Probe data is analyzed to derive Longitudinal Speed Profiles (LSPs) and an Optimal Longitudinal Speed Profile (12-15-2011
20110307165METHOD FOR CREATING SPEED PROFILES FOR DIGITAL MAPS - Probe data collected at times of low traffic density is analyzed to derive a Raw Road Design Speed Limit (RRDSL, 12-15-2011
20120010804Method and System for Conclusively Capturing a Violation of the Speed Limit on a Section of Road - By means of the method according to the invention, a vehicle is detected when it drives into and out of a specified section of a roadway, the detection time is acquired, and an image recording in which the vehicle registration plate of the vehicle is detected is produced so as to be associated with each detection time. The image recordings in which the same vehicle registration plate was determined are correlated, and an average speed is determined from the difference of the associated detection times and the known length of the section of road and is compared with a specified maximum speed. If a speeding violation is determined, a high-resolution image recording of the driver of the vehicle is generated.01-12-2012
20120065873NAVIGATION DEVICE & METHOD - Embodiments of the present invention relate to a method of 5 determining speed information for one or more road segments in map data, comprising receiving (03-15-2012
20120059574VEHICLE SPEED INDICATION USING VEHICLE-INFRASTRUCTURE WIRELESS COMMUNICATION - An example traffic control system includes a vehicle unit associated with a vehicle on a highway, one or more roadside units proximate the highway, and a traffic controller. The vehicle unit transmits a vehicle speed to the roadside unit, when in wireless communication range. The roadside unit transmits the vehicle speed to the traffic controller. The traffic controller receives vehicle speed data from a plurality of vehicles, and determines a suggested speed for each vehicle. The suggested speed may be correlated with an average speed of vehicles on a portion of the highway, for example the same highway portion on which vehicle is located, or a highway portion towards which the vehicle is heading.03-08-2012
20130226442THREE-DIMENSIONAL TRAFFIC FLOW PRESENTATION - Traffic flow is viewed in mapping or navigation. A processor generates a two-dimensional map from a perspective view. The perspective view is at an angle, which is not a normal to the map, looking down on the two-dimensional map. At least one road or pathway represented on the two-dimensional map is identified. Traffic flow information is obtained for a plurality of locations along the at least one road or pathway. A line is projected along a third dimension on the two-dimensional map. The line is above the road or pathway from the perspective view. A height of the line is a function of the traffic flow information for the locations such that the height for a first of the locations is greater than for a second of the locations. The map is displayed with the line.08-29-2013
20120158275REAL-TIME TRAFFIC SITUATION AWARENESS SYSTEM AND METHOD THEREOF - The disclosure provides a real-time traffic situation awareness system. In one embodiment, the real-time traffic situation awareness system receives driving data from a car, wherein the driving data comprises an image, GPS data, and gyroscope sensor data. The real-time traffic situation awareness system comprises an image processing unit, a feature extraction unit, a feature matrix database, a data grouping unit, and a situation awareness unit. The image processing unit processes the image to generate a processed image. The feature extraction unit generates a data point according to the processed image, the GPS data, and the gyroscope sensor data. The data grouping unit searches the feature matrix database for a plurality of feature groups of an optimal feature matrix corresponding to a geographic area according to the GPS data of the data point. The situation awareness unit analyzes the feature groups to generate traffic information.06-21-2012
20120158276VEHICLE DRIVING INFORMATION PROVISION APPARATUS AND METHOD - Disclosed herein is a vehicle driving information provision apparatus installed in a vehicle and configured to include a communication unit, a location information collection unit, a control unit and a warning delivery unit. The communication unit receives vehicle driving information from a server installed on a roadside, the vehicle driving information corresponding to a managing section of the server. The location information collection unit collects vehicle location information, including information about latitude, longitude and direction of the vehicle. If the vehicle driving information corresponds to a traffic situation that has occurred ahead of the vehicle based on the vehicle location information, the control unit determines whether the traffic situation is a dangerous situation using the vehicle driving information. If the control unit determines that the traffic situation is a dangerous situation, the warning delivery unit delivers a warning message corresponding to the vehicle driving information.06-21-2012
20110106416PREDICTING EXPECTED ROAD TRAFFIC CONDITIONS BASED ON HISTORICAL AND CURRENT DATA - Techniques are described for determining and using information regarding expected road traffic flow conditions information for vehicles traveling on roads. The expected road traffic flow conditions for a particular portion of a road may be generated by combining historical representative information about road traffic flow conditions for that road portion with current information about actual traffic flow on or near that road portion. The combination may, for example, provide benefits for estimating expected traffic flow conditions information for roads with structural flow obstructions that cause reduced traffic flow at certain road locations and times—for example, the expected traffic flow conditions information may be based at least in part on fitting or otherwise adapting partial actual traffic flow information about a vehicle's actual travel path to a historical travel profile for a road that includes representative traffic flow information for various combinations of road locations and time periods.05-05-2011
20100094532System for transmitting, processing, receiving, and displaying traffic information - A system for sharing and processing traffic information includes a number of traffic information computer systems within individual vehicles or devices and a virtual traffic information server on a mobile network. The traffic information computer systems are each connected through a peer-to-peer radio, cellular, Wi-Fi, or other similar types of communications network, and which each operate with a database for displaying road maps, with a database storing average speed data for directions of travel along roadways, and with a location sensor used to determine the location and average speed of the vehicle or device, which are transmitted to other vehicles. The virtual server returns average speed data for road segments, which is displayed on the road maps. The system includes, sharing average speed data calculated as well average speed data received from the plurality of vehicles to other vehicles, thereby enhancing the real-time communication of traffic data.04-15-2010
20120316765System And Method For Improved Traffic Flow Reporting Using Satellite Digital Audio Radio Service (SDARS) And Vehicle Communications, Navigation And Tracking System - Systems and methods are provided for improved traffic flow reporting (e.g., system bandwidth conservation and timely traffic flow updates) using in-vehicle devices, service hub, and communications system for transmitting aggregated traffic flow data to the vehicles. In-vehicle devices store data relating to monitored segments of roadways (e.g., segment identifiers or location codes and designated range(s) of speed), and send messages to the hub when current vehicle speed is not within a selected range designated for the current segment of roadway where the vehicle is located. Vehicles can be configured to send messages based on various criteria. A selected vehicle or group of vehicles can be commanded to send a message to the hub. The hub provides updated traffic flow data based on the messages to the communications system for transmission to the vehicles.12-13-2012
20120123667CROWD SOURCED TRAFFIC REPORTING - A traffic reporting service may allow for the generation of more reliable and accurate traffic reports, maps, and forecasts based on various data types and sources. Data sources include public sector sources, private entities, and end users providing crowd sourced data. Crowd sourced data is collected, verified, and used to generate a traffic report which is displayed to a user via a computing device. A user may use various information presented in the traffic report to make informed decisions when choosing travel routes and a departure time to reach a desired destination.05-17-2012
20120083996Data Collection and Traffic Control Using Multiple Wireless Receivers - Methods, systems, and devices for monitoring roadway traffic. A method includes transmitting wireless signals from a plurality of roadside equipment (RSE) devices, including from a first RSE device and from a second RSE device that are located at separated positions of an intersection. The method includes receiving responses by the first RSE device and second RSE device from a wireless device. The responses include a unique identifier corresponding to the wireless device. The method includes determining a signal strength of each of the responses by the first RSE and the second RSE and transmitting data from the first RSE device and the second RSE device to a control system. The data includes the unique identifier, the signal strength of each of the responses, and times that the responses were received. The method includes determining traffic information associated with the wireless device based on the received data.04-05-2012
20120083995SYSTEM FOR TRANSMITTING, PROCESSING, RECEIVING, AND DISPLAYING TRAFFIC INFORMATION - A system for sharing and processing road condition information includes a number of road condition information computer systems within individual vehicles or devices and a virtual road condition information server on a mobile network. The road condition information computer systems are each connected through a peer-to-peer radio, cellular, Wi-Fi, or other similar communications network, and which each operate with a database for displaying road maps, with a database storing average speed data for directions of travel along roadways, and with a location sensor used to determine the location and average speed of the vehicle or device, which are transmitted to other vehicles. The virtual server returns average speed data for road segments, which is displayed on the road maps. The system includes sharing average speed data calculated as well average speed data received from the plurality of vehicles to other vehicles, thereby enhancing the real-time communication of road condition data.04-05-2012
20120221232METHOD AND APPARATUS FOR TRAFFIC MANAGEMENT - A method for determining travel time of a vehicle on a road, wherein the vehicle is operable within a mobile communication network, comprising: collecting historical communication events of a mobile user in order to obtain travel samples, wherein the historical communication events indicate when the mobile user travelled along a monitored road; determining a cell handover sequence from the historical communication events; determining from the cell handover sequence, one of more road segments of the monitored road; determining the travel time of the one or more road segments according to the travel time samples; selecting, for an undetermined road segment of the monitored road for which the real-time travel time is not determined from the collected historical communication events, a candidate mobile user that is most likely to appear on the undetermined road segment; actively positioning the candidate mobile user to obtain positioning information; and returning to the step of collecting communication events of a mobile user currently on a monitored road with the active positioning as one communication event for the candidate mobile user, to determine the real-time travel time of the undetermined road segment.08-30-2012
20120130625SYSTEMS AND METHODS FOR DETERMINING TRAFFIC INTENSITY USING INFORMATION OBTAINED THROUGH CROWDSOURCING - Systems and associated methods for utilizing crowdsourcing probes to obtain traffic information are described. Such traffic information includes location, date, time, speed, and speed limit information. Embodiments allow for the determination of traffic intensity, or road congestion, through the calculation of a road speed capacity factor. Embodiments provide that the traffic information and traffic intensity information may be visualized through a user interface.05-24-2012
20110130947TRAFFIC PROFILING AND ROAD CONDITIONS-BASED TRIP TIME COMPUTING SYSTEM WITH LOCALIZED AND COOPERATIVE ASSESSMENT - This invention localizes traffic condition detection and classification to a vehicle. Vehicles work cooperatively to fuse their traffic condition assessments so as to produce larger geographical coverage and more reliable evidence of the conditions. The system can be executed on an onboard device which includes at least one of the following: GPS capabilities, connection connected to the vehicle to measure vehicle speed, or communication with a cell phone. In the example of the cell phone, speed can be computed from phone GPS, a GPRS/CDMA, or both. Otherwise, vehicle speed can be determined obtained from in-vehicle on-board diagnostic system (e.g. using the OBD-II protocol) or based on GPS and accelerometer readings.06-02-2011
20100049429METHOD FOR SENSING COVERING STATE ACCORDING TO VELOCITY AND SYSTEM FOR PROVIDING TRAFFIC INFORMATION USING THE SAME METHOD - Disclosed is a method for sensing a traveling state based on a speed. The method for sensing the traveling state based on the speed includes outputting a mean speed C for each link with respect to a number of total traversing times of a predetermined path, and updating a reference speed B with the outputted mean speed C, and measuring a speed A while traversing the predetermined path, and comparing the measured speed A with the updated reference speed B, thereby displaying the traveling state.02-25-2010
20100010731ESTIMATION METHOD OF TRAFFIC INFORMATION - The present invention provides a method of estimating traffic information of a road section at a particular time point on the basis of the traffic information of the road at the time point or points before the particular time point and the traffic information of the adjacent roads.01-14-2010
20120253648APPARATUS AND METHOD FOR GENERATING TRAFFIC INFORMATION - Disclosed herein are an apparatus and method for generating traffic information. The apparatus includes a first information collection unit, a second information collection unit, a comparison and analysis unit, and a computation unit. The first information collection unit collects first sensed data, including first reference sampled data and a plurality of pieces of first surrounding sampled data from a first sensor unit. The second information collection unit collects second sensed data, including second reference sampled data and a plurality of pieces of second surrounding sampled data from a second sensor unit. The comparison and analysis unit determines similarity between the first sensed data and the second sensed data, extracts a first time from the first sensed data, and extracts a second time from the second sensed data. The computation unit calculates the vehicle's average speed.10-04-2012
20120239282VEHICLE CONTROL DEVICE - Disclosed is a vehicle control device that generates a speed pattern of a vehicle in a predetermined traveling section and controls the vehicle on the basis of the speed pattern. The vehicle control device includes average traffic flow vehicle speed acquiring means for acquiring an average traffic flow vehicle speed in the predetermined traveling section, optimal low fuel consumption speed pattern generating means for generating a speed pattern which is optimized to reduce the fuel consumption of the vehicle in the predetermined traveling section on the basis of the average traffic flow vehicle speed, and control means for controlling the vehicle on the basis of the optimal low fuel consumption speed pattern.09-20-2012
20130231851ELECTRONIC DEVICE AND METHOD FOR PROVIDING TRAFFIC INFORMATION TO MOBILE DEVICES - In an electronic device and a method for providing traffic information, traffic information of all roads are acquired from a traffic information server, then the traffic information is analyzed to obtain basic information of each road. When a service that provides traffic information of one or more roads is subscribed to by a mobile device, the electronic device sends the basic traffic information of the one or more roads to the mobile device.09-05-2013
20110320112SOLAR OR WIND POWERED TRAFFIC MONITORING DEVICE AND METHOD - A system for monitoring the flow of vehicular traffic comprising: a plurality of detectors that detect the passage of a vehicle along a predetermined roadway; the detectors being powered by one of solar or wind power; at least one transmitter for transmitting the data relating to the passage of a vehicle at a predetermined point on a roadway; the transmitter being powered by solar or wind power; and a second receiver for receiving the transmitted data relating to the passage of a vehicle along a predetermined roadway for use by a motorist in determining a route of travel. A method for monitoring the flow of vehicular traffic for purposes of determining a route of travel for motorists comprising: determining traffic speed at least one point along a roadway using a plurality of detectors that detect the passage of a vehicle; the detectors being powered by one of solar or wind power, and transmitting the traffic speed using at least one solar powered transmitter for use by motorists in determining whether or not to select passage along the roadway containing the at least one point as a way to navigate through the region.12-29-2011
20130013181ROAD-TRAFFIC-BASED GROUP, IDENTIFIER, AND RESOURCE SELECTION IN VEHICULAR PEER-TO-PEER NETWORKS - A method, a computer program product, and an apparatus for wireless communication are provided. The apparatus adjusts a number of sets of identifiers in a plurality of sets of identifiers based on traffic information. In addition, the apparatus selects an identifier from a set of identifiers of the plurality of sets of identifiers based on the traffic information. Furthermore, the apparatus communicates using resources associated with the selected identifier. The traffic information may include at least one of direction of travel, map information, velocity, whether approaching an intersection, whether departing an intersection, location, a number of vehicles within a particular area, information from other vehicles, type of intersection, whether the intersection includes stop lights or stop signs, at least one computed value based on acquired traffic information, or information from other wireless devices.01-10-2013
20120150425DETERMINING ROAD TRAFFIC CONDITIONS USING MULTIPLE DATA SAMPLES - Techniques are described for assessing road traffic conditions in various ways based on obtained traffic-related data, such as data samples from vehicles and other mobile data sources traveling on the roads and/or from one or more other sources (such as physical sensors near to or embedded in the roads). The road traffic conditions assessment based on obtained data samples may include various filtering and/or conditioning of the data samples, and various inferences and probabilistic determinations of traffic-related characteristics of interest from the data samples. In some situations, the inferences include repeatedly determining current traffic flow characteristics and/or predicted future traffic flow characteristics for road segments of interest during time periods of interest, such as to determine average traffic speed, traffic volume and/or occupancy, and include weighting various data samples in various ways (e.g., based on a latency of the data samples and/or a source of the data samples).06-14-2012
20130018572APPARATUS AND METHOD FOR CONTROLLING VEHICLE AT AUTONOMOUS INTERSECTIONAANM JANG; Jeong-AhAACI DaejeonAACO KRAAGP JANG; Jeong-Ah Daejeon KR - Disclosed herein are an apparatus and method for controlling traffic at an autonomous intersection. A monitoring unit monitoring vehicles located within a predetermined service radius of an intersection. A collision zone information management unit classifies the service radius into a plurality of zones based on the results from the monitoring unit, and manages information about collision zones. A collision prediction unit predicts the possibility of collision of a target vehicle in the zone in which the target vehicle is located, based on vehicle information transmitted from the target vehicle, and calculates an estimated time of collision. A priority determination unit predetermines a priority of the target vehicle based on the estimated time of collision and calculates an expected entering time corresponding to the priority. A communication unit transmits control information about the target vehicle to the corresponding vehicles to control respective vehicles.01-17-2013
20080255754Traffic incidents processing system and method for sharing real time traffic information - A traffic incidents processing system for sharing real time traffic information between a plurality of users connected via a network. The system includes a central computer system, operatively connected to a wide area network such as the Internet, a multiplicity of mobile communication devices, capable of determining their geographical location, and are operatively connected to a wide area network such as the Internet, and are capable of transmitting location based traffic information to the said central computer system. The central computer system continuously maintains updated database of traffic information. The central computer system is capable of analyzing, screening and assessing the reliability of the traffic information, detect a traffic situation, and provide customized, real time traffic alerts to a plurality of users connected to a network and to mobile communication devices such as cellular telephones via the wide area network as well as via short messaging service SMS, multimedia messaging system MMS, or any other data protocol capable of communicating with mobile devices. The central computer system is further capable of storing a history of routes traveled by users, and determine an optimal route from any originating point to any destination point by analyzing the stored routes and construct the optimal route using the most frequently traveled segments found in the stored routes database, and the realtime traffic information that is known to the system.10-16-2008
20130103295METHOD OF TRAFFIC CONGESTION ESTIMATION - Disclosed is a method of traffic congestion estimation including a speed detection step of detecting speed of a vehicle in a predetermined period of time and outputting the detection result; a frequency analysis step of analyzing a frequency of the result of the speed detection and outputting the power spectrum; a slope detection step of detecting a slope of a power spectrum and outputting the detection result; a time variation calculation step of calculating time variation of the slope and outputting the calculation result; and a traffic congestion estimation step of estimating occurrence of traffic congestion from the calculation result of the time variation of the slope and outputting the estimation result.04-25-2013
20130103296CONGESTION ESTIMATION DEVICE - Disclosed is a congestion estimation device including a speed detection unit configured to detect a speed of a host vehicle and then outputting a speed detection result, an inter-vehicle distance detection unit configured to detect an inter-vehicle distance between the host vehicle and other vehicle and then outputting an inter-vehicle distance detection result, a correlation calculation unit configured to calculate a correlation based on the speed detection result and the inter-vehicle distance detection result and then outputting a correlation calculation result, and a display unit configured to display the correlation calculation result or information relating to the correlation calculation result.04-25-2013
20130124075VEHICLE TRAFFIC FLOW DATA ACQUISITION AND DISTRIBUTION - Embodiments of the present invention provide a method, system and computer program product for vehicle traffic flow data acquisition and reporting for onboard vehicle navigation. In an embodiment of the invention, a method for vehicle traffic flow data acquisition and reporting for onboard vehicle navigation can include acquiring imagery of multiple vehicles traveling on a roadway between two locations and individually identifying the different vehicles in the imagery. An elapsed time of travel can be determined for the individually identified vehicles between the two locations and a rate of travel can be computed for each of the individually identified different vehicles based upon the elapsed time of travel. Thereafter, the rate of travel for at least one of the individually identified different vehicles can be broadcast to a subscriber for at least one of the two locations.05-16-2013
20130124074SELECTIVE EXCHANGE OF VEHICLE OPERATIONAL DATA - Velocity information can be beneficial to various entities including other vehicles and a central traffic monitoring and routing system. Vehicles with sensors can serve as velocity probes to update speeds that are shared via a more global service. However, individuals may be reluctant to provide location and velocity information given privacy preferences. Local policies about sharing personal data are described that can be harnessed to enhance privacy while minimizing communication costs. The local data-sharing policies allow devices to monitor their own speeds and locations and to employ models and analyses that determine the value of sharing flow information with a larger service in accordance with privacy preferences, and to make local decisions as to when to respond to broadcasted queries for specific information, while minimizing the redundancy of signals from multiple vehicles.05-16-2013
20130144517SYSTEM AND METHOD FOR MODIFYING SCHEDULES OF VEHICLES - A system includes an interface module, a simulation module, and a resolution module. The interface module determines a captured state of vehicles traveling in a transportation network according to associated schedules and a proposed modification to the schedules. The captured state represents locations of the vehicles in the transportation network at a selected time. The simulation module simulates movement of the vehicles according to the proposed modification to the schedules. The movement of the vehicles is simulated from the selected time of the captured state of the vehicles. The resolution module determines potential ramifications from the movement of the vehicles that is simulated. The potential ramifications are representative of a simulated change in travel of the vehicles due to the proposed modification. The resolution module is further configured to use the potential ramifications for use in determining whether to implement the proposed modification in actual travel of the vehicles.06-06-2013
20100286899Combining Road and Vehicle Traffic Information - A computer-implemented method includes obtaining road sensor data reflecting speeds of traffic on road segments, transforming the road sensor data using vehicle probe data for the road segments reflecting vehicle speeds, and producing speed estimates for the road segments using the transformed road sensor data. The method can further include determining speeds for road segments between road sensors by smoothing data from sensors near the road segments.11-11-2010
20100286898APPARATUS FOR SUPPLYING ROAD CONDITIONS - An exemplary apparatus for supplying road conditions includes a detector, an information processing device, and a transmission device. The detector configured to detect current road conditions. The information processing device communicatively coupled to the detector for receiving information on the current road conditions. The information processing device stores predetermined information on road conditions and configured for comparing with the predetermined road conditions to obtain a comparison result. The transmission device communicatively coupled to the information processing device and configured for transmitting the comparison result to a predetermined recipient.11-11-2010
20120277985METHOD OF ANALYZING POINTS OF INTEREST WITH PROBE DATA - A method of analyzing points of interest (11-01-2012
20100318286METHOD OF CREATING A SPEED ESTIMATION - A method of creating a speed estimation representative of vehicle speed along one or more road segments. In at least one embodiment, the method includes obtaining at least reference speed data from a reference source of data and second speed data from a second source of data, wherein the second source is different from the reference and the speed data is indicative of vehicle speed along the or each road segment; using the reference speed data to verify the second speed data and modifying the second speed data according to the verification; and generating an estimation of vehicle speed for the or each road segment based upon the verified second speed data.12-16-2010
20130158847CONFIGURABLE TRAFFIC ZONE CONTROL SYSTEM - A configurable traffic zone control system (06-20-2013
20110313644SYSTEM AND METHOD FOR DETECTION OF AVERAGE SPEED OF VEHICLES FOR TRAFFIC CONTROL - The invention relates to a method and a system for identifying moving objects by employing a tag, said tag comprising at least alphanumeric characters and said tag being extracted from pictures taken by cameras located in at least two different points within a certain distance comprising extracting alphanumeric characters of said tag from the pictures taken by at least two cameras; converting said alphanumeric characters into other new characters of another representation space; creating a string of said new characters for each of the tags extracted from the pictures taken by the cameras at different locations, said cameras being synchronized and said pictures taken by the cameras within a predetermined time interval; comparing the strings by associating a correlation score; inputting a threshold score; identifying the moving object if the correlation score is over the predetermined threshold score.12-22-2011
20130191014VEHICLE SPEED DETERMINATION VIA INFRARED IMAGING - A system and method which detects and uses a point of contact between a vehicle's tire and the pavement as a reference point to improve the accuracy of vehicle speed detection in a motorized vehicle speed detection system. In one embodiment, a plurality of infrared images of a moving vehicle are received. Each of the images is separated in time by known intervals. The images are captured using an infrared camera which can be a single-band or multi-band camera which operates in an infrared wavelength band selected to enhance a contrast between the vehicle's tires and the road surface. For each image, a point of contact is determined where a same tire contacts the road surface. These points and the time interval separations are used to calculate the vehicle's speed. An alert signal is initiated to a traffic enforcement authority if the speed exceeds the road's speed limit.07-25-2013
20130204514ESTIMATING TIME TRAVEL DISTRIBUTIONS ON SIGNALIZED ARTERIALS - A system is provided for estimating time travel distributions on signalized arterials. The system may be implemented as a network service. Traffic data regarding a plurality of travel times on a signalized arterial may be received. A present distribution of the travel times on the signalized arterial may be determined. A prior distribution based on one or more travel time observations may also be determined. The present distribution may be calibrated based on the prior distribution.08-08-2013
20130204515TRAFFIC ACCIDENT DETECTION DEVICE AND METHOD OF DETECTING TRAFFIC ACCIDENT - The present invention provides a traffic accident detection device of detecting traffic accident that estimates a precise speed variation for a vehicle, and detects dangerous events similar to traffic accidents. A time series estimation unit (08-08-2013

Patent applications in class With determination of traffic speed