As the main mode of transportation between cities, the analysis of expressway traffic is of great importance for analyzing the movement of people during epidemic prevention and control, economic exchanges between cities, the economic characteristics of cities and so on. In order to efficiently analyze the trajectories of crowd movement on inter-city and round-city expressways, first, we propose an efficient algorithm for constructing expressway network graph based on expressway location points; second, we perform data cleaning on the mobile phone location data and reconstruct the crowd transfer OD matrices on expressways; finally, we combine the location data between origin and destination and the shortest path algorithm to obtain information about the route in the process of crowd transfer. We take a region in China as an example, and obtain crowd transfer information on the expressway network and the cross-sectional flow of each expressway entrance and exit. We analyze the closeness of transportation between its urban area and affiliated counties.

CICTP