This paper introduces the meaning of comparison basis,analyzes the reason and reasonless of taking transportation capacity as comparison basis between roadway and railway land use,and puts forward that it has real instructive meaning to take transportation need and economic-social effect as comparative basis.

Spatial distribution of the transportation demand in the western region based on the transportation network;

The paper analyzes the present situation,problems and causes of the lower validity on transportation demand forecast in china with the ideas,principles and methods of system sciences.

In order to establish a scientific transportation forecasting system and accurately get to know the forecasting theory in transportation demands,it is necessary to re-discuss the implications in the transportation demands and supplies.

Based on the analysis of the construction condition of San Du Ao Port Area of Ningde Port,port construction and local economic development,port orientation and container transport demands,as well as the interrelationship between them,this paper puts forward the orientation of development,scale and construction scheme of the starting project,and suggestions for further work to be done.

Through a comparison of transport demand and transport quantity,a concept of the potential transport demand floats out.