Small world model provides a new aspect and method for exploring the topological structure and intrinsic characters of urban road network.

So,the researching results of the theory are unsuitable for urban road network.

The delay at nodes is considered in the equilibrium assignment model special for urban road network, which is closer to the real case of urban road network and better than other common assignment models.

Urban Road Transportation Network Design Problem Based on Reliability Analysis;

Planning indices system of urban road network;

Analytical techniques about the supply and demand of urban road network;

This paper introduces a new algorithm to get the shortest path between two points in urban road network,based on the geographic characteristic of the road network.

The objectives of city road network planning and shortcomings of the available programming models were analyzed.

According to the characteristics of city road,the author has studied and tested some key techniques of shortest path analysis of city road network,according to the characteristics of city road network and put forward a practical and e.

The urban-rural integration and the networking urban construction are a united system of the urban-rural coordinate development and the proportional construction.