Abstract:

A multidimensional structural model of risk on the driving behavior decisionmaking was proposed considering 5 aspects of factor including the accident probability, the accident severity, the risk cognition level of driver, the control capability of driver, and the traffic information asymmetry. In this structural model, the driver cognition and decisionmaking were taken as the core in order to distinguish the model from the existing risk analysis theory of the traffic safety based on the road traffic system(pedestrianvehicleroad system). The quantitative expression of each risk factor and its corresponding risk level function were given respectively, and an integrated evaluation model was proposed for the safety risk level. A case study of driver behavior decisionmaking with different vehicle types before and after a bending section of highway was analyzed. The results show that the driving behavior decisionmaking depends on many factors, the integrated safety levels of 4 different vehicle types in order from serious to alleviatory are: heavy truck, big bus, light truck, and passenger car.

Key words: enginerring of communications and transportation, driving behavior decisionmaking, multidimensional structural model of risk, information asymmetry