Safety analysis of highway passenger transport and modeling of vehicle brake performances

To accurately evaluate the safety situation of highway passenger transport in China, the present condition of traffic accidents caused by long-distance passenger vehicles was reviewed, and the brake performances of long-distance passenger vehicles were detected by reaction type roller brake tester.Based on the technical methods, such as large sample data collecting, multivariable data analyzing and mathematical modeling, the brake performance distributions of these vehicles were analyzed, the optimum fitting distributions and optimum distributive parameter estimations of several brake performances were obtained, and the relevant statistical models of the brake performances were established.Analysis result shows that highway passenger transport mortality per 10 thousand vehicles is 26.828, and the mortality per 100 million vehicle-kilometers is 6.555, so the accident rate in China is still high.The brake performances of long-distance passenger vehicles obey Weibull distribution, the relative errors between statistical model volues and detecting results are all less than 2.378%, so the models are accurate and reliable.