Means of mounting a toll calculator in a motor vehicle

Message board with work lights for vehicles

Method and a system for registering vehicle fees

Method and apparatus for controlling motor vehicle traffic

Method and apparatus for controlling temporary traffic signals

Method and apparatus for controlling transponder signaling

Method and apparatus for displaying the status of a system of tr

Method and apparatus for effecting a wireless exchange of data b

Method and apparatus for monitoring electrical devices

Method and apparatus for monitoring highway traffic

Method and apparatus for operating a vehicle barricade

Method and apparatus for secure traffic light interruption

Method and arrangement for controlling a system of multiple...

Method and device for managing road traffic using a video...

Method and means for RF toll collection

Method and system for avoiding a collision at an intersection an

Method and system for controlling and adjusting traffic...

Method and system for monitoring the proper operation of a...

Method and system for regulating switching of a traffic light

Method and system for two-way packet radio-based electronic toll