Switching Behavior and Control Policy of Congestion: Examples from Taiwan Highway System

The highway system is an important component of the modern society as it allows an efficient intercity communication. However, with the increase in the number of cars, the traffic congestion becomes a widespread problem around the world. Here, we study the traffic conditions in Hsuehshan tunnel in Taiwan. When there is traffic congestion, there is a remarkable fraction of vehicles choosing an alternative path, even if it cost more time than jamming on the highway. In addition, we evaluate through statistics and the government’s policy to improve the road condition of the tunnel.