Study Of Oriented And Speed Control Facilities Optimization Category Of Highway Based On Traffic Safety

As highway infrastructure, highway safety facilities are playing important role on traffic safety. Highway serves the driver and passenger, analyzes pilot's demand is the bassic to optimit safety facilites.Paper based on the needs of pilot's demands of comprehensive,accruate information, demands of effictive protection in hidden area, the demands of comfortable and artistic driving environment three aspects analyze each kind of safety equipment function.Based on this, mainly aims the safety faclities'guidance function and speed control function to carry on the optimization.The optimization of guided facility, the paper first introduced three kides facilities with guidance fuction, the traffic signal,the safety traffic line,the line of sight induces the facility.Amalyzed each kind of guidance facility influence factors, symbolizes that the information directs the pilot correctly the driving, the line of sight in the daytime and the dark night to the graticule induces the facily quantity and the spacing can guarantee the pilot correct sensation path linear cruvature as a goal, give the optimization category about the traffic signs information choice,graticule material and spacing of guides facilities. Optimization about the speed control facilities, paper start from the speed and traffic safety's relations, analyze relations about speed with traffic accident quantity and accidental severity's, analysis obtain that overspeed is a substantial clause of our country's traffic accident, from the advance notification prevention of dangerous road section and reduces the accidental severity three aspects to analyze the function of each kind of speed control facility.According to the speed accident causes of thingseses, propose optimization category of signs and lines in accident forecast,prewenting aspects and guardrail,hedge driveway optimization category in recuce accident severity aspects; all psrts for ramp traffic flow characteristics, puts forward ramp control speed facilities optimization category. Paper take the Jing—Hua highway as example,using optimization category in highway oriented and speed control facilicies.