Shunting trip plan transmission, control and printing system,which mainly realizes shunting trip planning and relevant data transmission between heterogeneous networks,is one key part of integrated automation system at marshalling station.

The core functions of intelligent commanding system for shunting work refer to those essential and key functions that the system should possess, mainly including 3 parts: the generation of shunting trip plan, the optimization of work, and the smoothing function that represents the adjustability of commanding and the adaptability of system.

Through an analysis to the process of station shunting operation,based on existing theory of shunting trip plan producing, the paper analyzes andstudies the shunting trip plan producing with different sidings.

the principles for making cut plan of the train forming are systematically expounded and its realization method by computer is also discussed in this paper.

is designed for making the cut plan of forming pick - up and distribution trains.

In this paper,the quantitative criterion for evaluating the schemes of shunting operation plan is put forward, the conception of the combined scheme is deduced according to the comprehensive analysis to the set of the shunting operation plan schemes, and the analysis and calculation method is discussed at length for computer optimizing the shunting operation plan schemes.

By investigating in the transportation department of PetroChina,we give the direct matrix of transportation,then analyze its role in the decision making of transportation plan.