关键词: 交通运输工程；轨道交通；运营效率；三阶段DEA-Tobit模型；影响因素

Abstract: Taking 26 typical cities in China as samples, based on the influence of environmental variables and random disturbance factors, a three-stage DEA-Tobit model was used to carry out empirical analysis on the measurement of urban rail transit operational efficiency. The research results show that there is a significant correlation between the operational efficiency of urban rail transit and factors such as system scale, structure, number of transfer stations and network conditions. At present, the rail transit in most cities in China is in the stage of increasing scale benefit, and its resource allocation capacity is already relatively good, but the scale efficiency is insufficient, resulting in low operational efficiency. After adjusting the environmental variables and random disturbance factors, the pure technical efficiency of urban rail transit system will rise, while the scale efficiency will decrease significantly, which is especially evident in cities focusing on the development of low-capacity systems. It is indicated that the control and coordination of the external operating environment can effectively improve the operational efficiency of urban rail transit systems.

Key words: traffic and transportation engineering; rail transit; operational efficiency; three-stage DEA-Tobit model; influence factor