Traffic Simulation Method for Dynamic Road Network Model Construction Based on Oblique Aerial Photogrammetry Technology

Abstract

In order to improving the accuracy and authenticity in traffic simulation, we propose the Oblique aerial photogrammetry technology to the simulation process to build dynamic road network model in three stages. First, we extract the 3D linear data from real measurements and complete the data settlement by oblique aerial photogrammetry technology and photogrammetry software. Then, we transform aerial data into a simulation file (INP) through a self-complied program and matched with VISSIM. Finally, we choose a slope section and intersection in Nanning City as experimental scheme for road network modelling simulation. Through comparing and analysing the differences in simulation results of road network models based on new method (hereinafter referred to as OAP) and traditional method from the aspects of road alignment, vehicle type, and traffic loads, we draw a conclusion that using the OAP method could be more intelligent and accurate in the road alignment, especially on slope sections, meanwhile the simulation evaluation indicates the OAP method also has better precision of practical traffic states and higher accuracy of simulation parameters.