Haiyan system has been installed in the national expressway system, including Beijing-Tibet Expressway, Jingha Expressway, Beijing-Hong Kong-Macao Expressway, Shanghai-Chengdu Expressway, Shanghai-Nanjing Expressway, Hangzhou Expressway, Nanjing Expressway, Hefei Expressway, Wuhan Expressway, Guangzhou Expressway, Changsha Expressway and Shijiazhuang Expressway.
Haiyan system is an advanced intelligent transportation system, which can provide detailed road traffic information for road management departments, such as traffic flow, speed, road conditions, etc., so that managers can grasp the road traffic situation in real time and make timely and effective decisions.