Mountainous Highway Roadside Safety Impact Analysis

Since the opening and operation of the first highway in China (Shanghai-Jiading highway) in1988,China’s highway construction steady development. During24years, China has constitute a "7918" highwaystructure network.With the rapid development of China’s highway, highway building gradually from theplains region to the mountains, turning underdeveloped areas into relatively developed regions. Theopening of more and more mountainous highway operators, play a crucial role in the development of themountain economic, improving the lives of mountain people. However, when people enjoy the convenienceof fast traffic, while also facing traffic impact, Especially roadside accident, regardless of the probability ofoccurrence or the severity of accident always maintained constantly growing trend.Firstly combination of Jiangxi Provincial Communications Department key scientific andtechnological project "adverse weather conditions mountain highway roadside safety key technologyresearch", select three typical mountain highway in Jiangxi Province as the research object, respectively,from the time, weather, models and linear indicatorsthe four aspects to understand the internalcharacteristics of the mountainous highway roadside accident.Then from the subjective and objective aspects to explore the mechanism of roadside accident.Subjective aspects, mainly from the physical and psychological condition of the driver. Drawing threeconclusions by driver physiological mechanisms:(1) Muscle fatigue and dizziness since a long time in thestatic force is one of the factors.(2) On both sides of the rear region has about17.75°" blind spot ", andthis "blind spot" is precisely may induce a roadside accident.Objective aspect, First, understanding rainy environments, snow and ice conditions and foggyenvironment different attributes, based on the rate-limiting model of the stopping sight distance, vehicle thewater skiing critical model, the snow safe driving speed limit model and ADAMS/Car software analysison adhesion coefficientand atmospheric visibility of the roadside safety. And then focus on the carriagewayoutside the roadside environment and found that the value of the of roadside safety roadside safety net zonewidth and slope angle, the hard shoulder of the settings, type of ditches and roadside fence set and typeselected closely related to the safety of roadside.