A lot of foreigners get confused about how to use "Crosswalk Pushbutton Traffic Lights" in Japan.
In Japan, some crosswalk has the pushbutton traffic lights.
When you want to cross the road, push the button and wait for the traffic lights to turn green. If you didn't push, the traffic lights wouldn't change automatically.
So when you find the yellow box of pushbutton traffic lights at the crosswalk that you want to cross the road, you need to push the button and wait for the lights changes red to green.