Model Construction and Simulation Analysis of Vehicle Collision on Steep Road Section in Mountainous Area

Mountainous areas account for a large proportion of China’s land area. Mountain highway is an important part of our country’s highway system. The line shape of mountain highway is complex. The driver’s line of sight is affected by the slope when driving in this section, and the safe sight distance is insufficient, which can easily cause vehicles to collide with traffic accidents time and rollover in high subgrade section at the same. This paper analyzes the influence of the steep slope on the driver's sight distance, and quantitatively analyzes the relationship between the sight distance and the slope during the driving process of the driver in the steep slope section, so as to provide a reference for ensuring the safe sight distance of the steep slope section of the mountain road. The dynamic analysis of vehicle collision on steep slope is carried out, and the relationship between vehicle speed and collision deformation is studied. The dynamic simulation of vehicle collision is carried out by Pc-Crash simulation software, which provides suggestions for the safe driving speed of vehicles on steep slope sections of mountain roads so as to ensure the driving safety of vehicles on steep slopes in mountainous areas. It can reduce the property loss caused by vehicle collision in mountainous steep slope section and better protect the driver's personal safety.