The ‘Red Light’ law is a law in Idaho that says that if (and only if) you’re stopped at a red light controlled by a triggered traffic-control signal using a vehicle-detection device, and it doesn’t change for a full cycle of the light – for example, because the sensors didn’t pick up your motorcycle – that you can then proceed as if it had been a stop sign. This law is a little tricky, and a little dangerous, as other vehicles may not expect you to behave in this way, and unpredictable behavior is a frequent cause of accidents.
This does not apply to intersections not controlled by those sensors, so be sure to come to a complete stop when coming to a red light at an intersection and make sure to wait for a full cycle of the lights. Claiming that you believed it to be a sensor-triggered light when it was not generally isn’t accepted as a defense, so as always, proceed with caution.