Risk Simulation Analysis of Vehicle Moving on Curved Sections based on Driver Braking

ABSTRACT

In consideration of rainfall, over-speeding and road alignment, driver braking which caused the risk of vehicle moving on curved sections is analyzed synthetically. The simulation model of the dynamic characteristic of vehicle is established using Carsim, the critical adhesion coefficient and lateral acceleration are used as the evaluation index of vehicle moving risk, orthogonal design is used to reduce the test data, effect factors and the efficiency are analyzed based on the knowledge of mathematical statistics, the evaluation model about vehicle moving on curved sections is established using Matlab. The results show that speed and radius of horizontal curve have significant effects on the risk of driving, braking effect is moderate, super-elevation has few effect; when braking is moderate, even if with poor road alignment, fast speed and bad weather conditions, vehicle will not sideslip; when braking is heavy and over speeding, no matter the road alignment and the weather is good or bad, vehicle may sideslip. In addition, in the risk evaluation, meeting the requirement of adhesion coefficient, also meeting the requirements of lateral acceleration. The research results can provide guidance for risk analysis of vehicle moving on curved sections.

Keywords: