P. Hu’s research while affiliated with Tongji University and other places

In order to search appropriate fitting models for describing change rule of per capita travel speed in features of interrupted flow, an estimating method of per capita travel speed based on multi-source is provided. Normal distribution and lognormal distribution are chosen as basic forms to build four kinds of bimodal distributions. Based on the fitting result of real data in Zhengzhou, China, the feasibility of bimodal distributions is analyzed quantitatively by the goodness of fitting test and the adaptation to variance of sample data. Considered mixed traffic flow on bus and car, results indicate that N_N bimodal distribution is fitted for the road sections with transit lane better, and N_LogN bimodal distribution is fitted for the road sections without transit lane better.