Based on an analysis of the characteristics of evaluation and decision of metropolis commuter rail transit planning,a discussion of the index system and method is conducted to evaluate the metropolis commuter rail transit line network planning.

This paper introd uces the principle of transport organization, analyzes the character of differ ent routing modes from service level,traffic capacity and rolling stock, and pro poses some feasible routing modes on regional express rails.

With an introduction of the characteristics of the lines and construction of RER in Paris,this paper mainly analyses the distribution patterns of RER stations,argues that the planning of regional express rail in China shall refer to the successful patterns of Paris.

An analysis is made of the factors affecting the running models of regional rapid rail lines on the basis of overseas experiences.

Backgrounded with the urgent construction of regional rail transit (RRT) in the Yangze River Delta, this paper discusses the advantage and disadvantage of rail transit financing in this region,argues that a multi-channel and multi-factor mode shall become the main trend.