None of the sensors here can be tripped by anything less than the amount of steel found on a motorcycle or car. They are, in effect, malfunctioning when approached by any other type of vehicle. Our main street is under reconstruction, and for the duration, the signals have been put on a regular cycle, and taken off the sensors. I hope to rally my neighbors to get the lights to be left this way when the construction is done. Except for the fact that it's torn up by the construction, it's much easier/safer to cross with regularly-cycling lights.