Research On Effectiveness Analysis And Evaluation Of Raffic Safety Facilities In National And Provincial Roads

China national and provincial roads have played an important role in the economic andothers, but frequent traffic accidents restrict their devolepment. unreasonableness of trafficsafety facilities is one of reasons leading to accidents in national and provincial roads.Optimizating on traffic safety facilities after effectiveness analysis and evaluation,in order toimproving safety on road.Based on the research status at home and abroad,by Analysising traffic characteristics(experimental site characteristics,traffic volume,traffic composition and accidentcharacteristics) and setting questions exicting in the traffic safety facilities,propose thatunreasonableness of traffic safety facilities is one of reasons leading to accidents in nationaland provincial roads;Designed new traffic signs according to sign characteristics at home andabroad, then they conducted visal experiment with existing signs considering characteristicsof drivers age and illumination,put forward reasonable proposals for Optimization on trafficsigns after data analysis and evaluation; Three typs of rumble stripes including “5+7”,“10+10+10”and “10+8+6+4+2”,and decelerating facilities including rubber speedhump,simulation police, belgium pavement,40m belgium pavement-hump,40m belgiumpavement-1m belgium pavement did effective experiments，analysised and evaluated，proposed reasonable proposals for rumble stripes and decelerating facilities。According to effectiveness analysis and evaluation of traffic safety facilities includingsigns, rumble stripes and decelerating facilities, brought forward reasonable proposals forOptimization on traffic safety facilities，It has some reference significance to reduce accidentrate in the national and provincial roads.