Patent ID: 7441727
Filing Date: 2008-10-28
Classification: B61L

Abstract:
1. A highway-railroad grade crossing warning system, said warning system comprising: an approach circuit in the railroad on either side of the highway; an island circuit in the railroad at the intersection of the railroad and the highway; an electronic controller electrically coupled to said approach circuit and to said island circuit; a warning device which is activated when a train is detected in the approach circuit or in the island circuit by the electronic controller; a display in the electronic controller, the display having a plurality of touch-sensitive fields, a first touch-sensitive field on the display in said electronic controller responsive to a command for selectively taking the approach circuit out of service; a second touch-sensitive field on the display in said electronic controller responsive to a command for selectively taking the island circuit out of service; a third touch-sensitive field on the display in said electronic controller for selecting the amount of time that the approach circuit or the island circuit is to remain out of service, and means in said electronic controller for restoring service to said approach circuit or to said island circuit upon expiration of the entered amount of time.