Networked characteristics of the urban rail transit networks

► The average degrees of URTNs belong to the interval [2, 2.45]. ► Most of the average shortest path lengths of URTNs lie in the interval [10, 16]. ► Three average betweenness linearly increase with the increase of stations. ► The cumulative degree distribution of URTN is exponential distribution. ► The cumulative distribution of shortest path length is Gauss distribution.