THE DEVELOPMENT OF EVALUATION CRITERIA FOR TRAFFIC SAFETY IN EXPRESS HIGHWAY

抄録

The severity of traffic accident on expressway highway is higher than those of the other highways of interrupted flow. The improvement of the safety for express highway is then important, and it is necessary to develop the criteria for the evaluation of the safety. This study developed the integrated criteria for the safety of the express highways, which can consider both of the quantitative and the qualitative aspects. The quantitative factor includes the accident frequency, and the quantitative ones do the driver's awareness for the change on the highway environment as well as the driver's satisfaction on the highway safety.