In California most lights have sensors, and the sensors themselves can break/not be properly calibrated. When you happen across this that means is certain ligh

In California most lights have sensors, and the sensors themselves can break/not be properly calibrated. When you happen across this that means is certain lights will always be green, and others will always be red. It's mostly a problem with motorcycles, and I've had to go through my fair share of red lights late at night when no one was around, but I've also (rarely) had a problem with a car.