Emergency Vehicle Priority Control Method Combining Dynamic Lane Control and Phase Control in Cooperative Vehicle Infrastructure

Abstract

Although the road traffic safety laws in various countries stipulate that emergency vehicles are exempt from route restrictions and traffic signals when performing emergency tasks, the severe traffic congestion issues in almost all major cities need to be considered. The frequent occurrence of these problems hinders the passage of emergency vehicles, and the key factor behind this obstruction is often due to the inherent flaws of traditional passive traffic control theories. In order to solve this problem, this paper innovatively constructs a high-dimensional and multi-variable flexible traffic control model. This model has four variables, which can greatly enhance the flexibility and capability of intersection control. On the basis of this model, an emergency vehicle priority control method combining dynamic lane control and dynamic phase control is designed. Comprehensive experimental results demonstrate that the proposed method in this paper can effectively ensure the fast and priority passage of emergency vehicles even in the presence of traffic congestion at intersections.