The sensors use an inductive loop, not a magnet. It does interact with sufficiently large metal objects, so I can see why folks call it magnetic.
These generally have to be tuned for bicycles and even motorcycles, to detect the much smaller mass.
These generally have to be tuned for bicycles and even motorcycles, to detect the much smaller mass.
Further the muni often lacks resources to fix this in a timely manner after reporting. In some cases you see states effectively throw up their hands and say "if it doesn't detect you can just run the red"
https://www.advrider.com/f/threads/dead-red-traffic-signal-l...