The on-ramp control strategy of traditional urban expressways is summarized,and a new on-ramp control strategy of urban expressways brought out.

From the viewpoint of macro and dynamic character is tics of urban freeway traffic flow, a commonly used macroscopic, dynamic and det erministic traffic flow model for traffic control is developed.

Urban freeway traffic modeling and control are surveyed in this paper.

Topology of expressway net has changed when traffic accident occurred.

It was introduced that a joint logistics model for expressway service area should be built on the basis of expressway net.

Several key questions of freeway network planning;

Integrated optimal control model of freeway network based on particle swarm optimization

This paper proposed a quantitative methodology for analyzing the interchanges demand of freeway network.

Generalized planning system of provincial expressway network based on traflic engineering;

Study of Unbalanced Regional Development Patterns and Spatial Distribution of Expressway Network;

This paper analysed the expressway network planning characteristic and planning evaluating aim.