Traffic State Identification for Expressway Network Based on ETC Gantry System

The traffic state identification of expressway network is an important means for managers to make decisions, guide them to choose reasonable travel paths and improve the efficiency of expressway traffic. In this paper, the data of ETC gantry system, toll station, traffic data monitoring data, video structured data are sorted and analyzed. The data characteristics of ETC gantry system are mainly studied, and the traffic state identification model based on speed and traffic density is constructed. The model is verified and analyzed by using the actual data of a domestic expressway. After research, the overall accuracy of the traffic state identification model is more than 95%, which has high accuracy and reliability, and has high application value.