Key Factors Analysis of Work Zone Safety and Mobility based on Micro-simulation

With the development of the highway in China, maintenance engineering raises quickly, which will increases the travel time and reduces the travel safety. Organization and management of the work zone in China have a big gap with some developed countries, so it is necessary to analyze the key factors of the work zone safety and mobility in order to increase the management level. This study selected the transition area (Ls) length and speed limit value as the objects, based on micro- simulation and used MSDE and travel time to evaluate the work zone safety and mobility. Through regression analysis of simulation data we got the influence model of these two factors on safety and mobility. The purpose of this study is to help decision makers clearly understand how the two factors influence on safety and mobility, then change different factors to make reasonable maintenance plan or optimize it in order to solve the safety and mobility problems in work zone. Consequently, the organization and management of the work zone in China can be improved.