Can I get me one of them devices here?
I sit through 3 light cycles every day in my school bus, waiting for a green left-turn arrow.
Sorry, but you need a government license to won one.
Just kidding.
You are not setting off the sensors.
Stop 1 bus or car back from the white line. See if that sets if off, if not, stop 2 bus or carloads in back of the white line.
Honestly, they set the sensor off or it is just damages. The sensors are under the street where the vehicle go over them. A vehicle as big as a bus should have no problem setting it off. That is a sensor problem not the controller problem