Principle and Method of Making Express Freight Train Working Diagrams

An express freight train working diagram, whose reliability and precision has a decisive influence on the level and the quality of express freight train service, plays a crucial role in express freight transportation organization. The express freight train is divided into two classes - fast freight train and direct freight train - and establishes a principle of making an express freight train working diagram. This paper presents a series of methods for making an express freight train working diagram, which includes "making the freight train line and the passenger train line in the same measure depends on the speed level of the train" and "making the freight train and the passenger train share the same scale for locomotive operation". The methods are conducive to improving the quality of an express freight train working diagram and completes the theory of express freight transportation organization.