This topic has been visited before, but I couldn't find the thread, so here we go again.

On my way to the university, there are two major intersections I have to cross. The first one has a stoplight that either seems fairly easy to trigger, or is set to change no matter the traffic density, but not the second. I remember reading that there is a way to trigger stoplights without the help of cars and without pushing the pedestrians' walk button, but cannot remember what that is.

Correct me if I'm wrong, but is there a way?