Research On The Effectiveness Of Tarffic Safety Facilities In Highway Black-spot

Accident-prone is the area where occured accidents frequently, it has a serious influenceon the security of highway, pose a great risk to passenger’s life and property. Safety devicestransfer the traffic information from traffic management, is used to correct the real trafficenvironment.Accident-prone formed by a variety of factors, and engineering measure hardlyword on it.Reasonable and effectiv traffic safety facilities can be effective in reducingaccident rate and accident severity, moreover,it’s have a good engineering economy and greatengineering value.Reasonable determination of accident-prone is the premise for traffic safety research, onthe prerequisite of safety characteristic analysis of Beijing-Shanghai highway, comparingdifferent method to identity and propose a means to determinat the accident-prone based onaccident prone.Through analyzing the accident causes, the main factors in causing accident isspeed, which directly affect the rate and severty of the accident. Based on the above analysis,speeding-limit can improve the security of accident-prone.How dose the traffic safetyfacilities influence the vehicle is also concentratde on speed. So analyze the relationshipbetween speed and accidents in the mediation of speed, establish a velocity gradient ofdiscrete-accident severtity, accident-accident rate models, provides quantitative basis for theeffect of traffic safety facilities works.During the course of research, analysis the front andrear section of traffic safety facilities, verify the highlights speed difference under theinfluence of difference traffic safety facilities. When we talk about the effectiveness of, firstelaborated the influence of typical accident-prone locations of vehicle traffic safety facilitiessafety facilities. This paper combined with the traffic safety facilities speed data of otherhighway in Hebei and macroed analysis the trend of pre and post speed gradient traffic safetyfacilities, speeding rate and discrete degree. By reducing the severity of the accident and theexpected number of road accident to evaluate the effectiveness of on the main traffic safetyfacilities.