| 20100026520 | TRAFFIC SIGNAL DEVICES AND METHODS OF USING THE SAME - A traffic control system and device is provided. The traffic control system of the instant invention permits two-way communication between a plurality of traffic signal devices and/or other devices or locations. Each traffic signal device locally controls the state of the traffic signals, while communication between the traffic signal devices is used to synchronize the internal timers or clocks of the plurality of traffic control devices. | 02-04-2010 |
