In this paper,the optimal design model of the seismic absorption and isolation system for railway simple supported beam bridges considering the running safety of vehicles is established.

Influence on security of moving train on bridge caused by bridge lateral rigidity;

Research on simulation of the train operation safety and real-time control mode based on closed-loop control on Shanghai-Nanjing line;

Due to the limited design speed of the existing bridges at 120 km/h and the strong vibration of the freight train with Zhuan 8A bogies installed at the speed reaching 78 km/h, some problems appear after speed increase of the railway threatening the train operation safety on the bridges.

The definition of train operation safety guarantee system and the difference between the above system and train operation safety system are discussed in this paper.

Measurement of anti-slide performance of tunnel road surface and its effect on driving safety;

Attention assignment characteristic of driver and its influences on driving safety

To reduce the effect of trucks on driving safety,the influence of truck traffic on highway operating safety was studied on the basis of considering truck driving theory,traffic environment and drivers characteristics.

By the thought of system analysis,this paper puts forward entirely the hiberarchy and their relation and function of the system,at the same time,it illustrates the inbeing and its model of the operation safety ensuring system.

The supervision and control system of train operation safety is acomprehensive system that ensures the safety of railway operation.

Based on the actual situation of China railway transportation, fromaspect of man-machine-environment and with systematic and scientificresearch method, the paper suggests to build up a railway operation safetyensuring system constituted of man safety, equipment safety, environmentsafety alarming and safety emergency rescue system, and to realize resourcesharing by network.