One-way traffic monitor

Claim 1

A vehicle disablement system for detecting and stopping a vehicle traveling in an undesired direction, the vehicle having an engine, a gearshift apparatus movable to a reverse position, and an ignition switch selectively movable to an on and an off position, said disablement system comprising: at least one reflector having encoding means, said reflector being mounted adjacent a road surface and being directed towards a vehicle traveling in an undesired direction, transmitting means for transmitting energy from said vehicle to said at least one reflector, receiving means for receiving energy reflected back to the vehicle from said at least one reflector, microprocessor means for recognizing said encoding means of said at least one reflector and for producing a recognition signal output in response thereto, disablement means for disabling the ignition system of the vehicle, timer means, activated in response to said recognition signal from said microprocessor, for activating said disablement means only after a predetermined interval of time has elapsed, reset means operably connected to said ignition switch for deactivating said disablement means in response to the ignition switch being moved to the off position and then to the start position, override means operably connected to the gearshift apparatus for preventing reactivation of said disablement means when the gearshift apparatus is shifted into a reverse gear position within said predetermined time interval, and alarm means activated in response to said recognition signal from said microprocessor.