To reduce the complexity,the motor train-set scheduling problem was divided into two sub-problems: making sub-routings and then building routings based on the sub-routings.

This article studies the basic principles of urban rail operation organization, the forms of the routing modes and the theory of marshalling modes,makes a comparative analysis of fixed and non-fixed train on the long-short route.

How to organize and control the turning left traffic flow reasonably is the key problem for management of traffic order and improving the traffic capacity at intersection.