How to organize and control the turning left traffic flow reasonably is the key problem for management of traffic order and improving the traffic capacity at intersection.

Based on field research on some major intersections,this paper classifies problems of different grades of intersections, puts forwards of improving measures,and provides a reference to alleviate the congestion status of the Second Ring Road.

Determination of the severity of traffic conflict at highway intersections;

This article divides traffic conflict into 2 types: common conflict and severe conflict and chooses the ratio between the number of traffic conflicts and traffic volume in typical periods as indices on the consideration of the whole traffic condition on highway intersection.

Through microscopic analysis of the right-turn vehicles curve process,this paper has proposed the length computational method of the offset exclusive right-turn lanes at signalized and non-signalized highway intersections.

Design and implementation of Remote Video Surveillance System for railway level crossing;

Urban logistics delivery and traffic signal control at plane crossroads;

The existing method of selecting control modes considers mainly traffic capacity in the control of highway intersection,and the index of accident numbers is chosen to consider safety,but the basis is constrained in practice owing to its own limitation.

By means of analysis and research on road traffic conditions and traffic conflict data of highway intersections,"influence coefficient" concept is introduced,the relation model between the road at traffic conditions of highway intersections and traffic conflict data is established in this paper.