Actuated digital pretimed traffic controller
Controller interface device
Coordinator for traffic signal controller
Digital traffic control system
Intelligent traffic control and warning system and method
Intelligent traffic control and warning system and method
Intersection warning system
LED traffic signal light with automatic low-line voltage compens
LED traffic signal light with automatic low-line voltage compens
Method and apparatus for displaying the status of a system of tr
Methods and systems utilizing a programmable sign display...
Road traffic control system with alternating nonstop traffic flo
Road traffic monitoring system
Traffic control method for multiple intersections
Traffic control system and kit
Traffic control system and kit
Traffic light control and information transmission device
Vehicle traffic control system