Speed sensitive visual warning system for locomotives

A visual warning system for a locomotive having a selectively operable audible warning device, said system comprising a control module control unit adapted for mounting in a locomotive for selective operation of signal lights ON and OFF and at least one signal light electrically connected to said control module and being selectively operable thereby ON and OFF in response to selective operation of said control module, said system further including speed monitoring means adapted to be mounted on a locomotive for determining the speed of a locomotive and providing a first output signal representative of the speed of a locomotive, said system additionally including first circuit means responsive to the operation of the audible warning device for providing a second output signal representative of said warning device being operated either ON and OFF and second circuit means responsive to said first and second output signals for selectively operating said signal light ON in response to said first and second output signals.

A visual warning system for a locomotive having a selectively operable audible warning device, said system comprising a control module adapted for mounting to a locomotive for selective operation of signal lamps and at least one signal lamp electrically connected to said control module and selectively operable ON in response to the operation of said module, said system further including operating condition monitoring means for sensing an operating condition of a locomotive and providing a first output signal representative of said operating condition of a locomotive, said signal system additionally including first circuit means responsive to operation of the audible warning device for providing a second output signal when the warning device is being operated ON and second circuit means responsive to said first and second output signals for selectively operating said lamp ON in response to said first and second output signal.

A visual warning system for a locomotive having an actuatable audible warning device, said system including pressure-sensitive means for sensing the operation of said audible warning device, a control module for mounting on the locomotive, and first means connected to said pressure-sensitive means for triggering said control module whereby said control module is actuated whenever said audible warning device is in operation, the improvement comprising second means connected to said control module for sensing the speed of a locomotive and providing an output signal indicative of the speed, logic circuit means operatively connected to said control module and responsive to said output signal for selectively preventing the actuation of said control module by said first means when the speed of a locomotive is below a predetermined speed as established by said second means, and circuit means for maintaining the actuation of said control module after operation in response to said audible warning device.