Not far from where I live, there is an intersection where the traffic lights operate in different ways depending on whether you’re walking or driving.
What I mean by this is that if you’re driving, the lights work as you would expect. They change at specific time intervals in an automated fashion. But if you’re on foot and you want to cross the street, the “walk” sign will not display unless you’ve pressed the manual “change traffic signal” button on your side of the street.