Originally Posted by
paulwwalters
The car behind me doesn't trigger the green, which is the problem. And there's a sensor loop in the pavement, I don't think the lights are IR sensing (unless that's normal and the IR thing is for emergency vehicles only, in which case the lights probably do have them as well).
Almost all lights installed in the last decade or so have IR sensors for emergency vehicles. The transmitter is only for EVs or other traffic signal preemption-authorized users (funerals, presidential convoy, etc, usually escorted by police cars)