The traffic problem in the world is very difficult. Our traffic control system is also old-fashioned. It is mainly based on timer. Therefore, when heavy traffic occurs on a single road, the traditional traffic controller cannot control the traffic system. That's why he plays the role of a traffic cop. However, many areas do not have traffic police. People have to play the role of traffic controller. Here's the game.

You can control the traffic signals by taping on screen signal lamp.