Hierarchical Road Traffic Network Structure and Protocol

摘要

The hierarchical structure of the road traffic communication network according to the present invention is characterized in that at least one of the first layer and the second layer road traffic information communication network has a wired or wireless communication line that can be shared by a plurality of traffic information communication devices, The traffic signal control devices of the hierarchical structure are connected to the traffic signal information data communication network, thereby enabling comprehensive, prompt, accurate traffic situation monitoring and efficient control. In addition, the proposed network protocol that can use the common line can effectively and economically satisfy the communication purpose for comprehensive traffic control, while making the economic traffic signal information data communication network processing device simple and economical.