, and several distribution models of waiting time are obtained through curve fitting. Moreover, the
characteristics and influence factors on passenger waiting time are analyzed by comparing with passenger waiting time at other
railway stations. The results show that the rules of passenger waiting time at Lanzhou station obey the rational distribution and
Gaussian distribution, the average waiting time at Lanzhou station is longer and coefficient of variance is bigger. Furthermore,
the bulk arriving degree of passing train is higher and the passenger arriving time of origin train is earlier.