When I was young, on my route to school there was a bicycle crossing that worked like this. Cars always have green unless there's a car approaching from the side street. Bikes always have red unless they press the button. So when I approach at reasonable speed and see that the cars have green, I have to stop, press the button, and then build up all that speed again.

Nobody does that. Until there was a police car hidden just after that crossing. I suspect it was a very good day for fines.