Study On Forming Mechanism And Treatment Of Road Slope Of Illusion

As the route or the side of the road environment,drivers are influenced by the driver's visual illusion in the process of driving,to drivers take the wrong driving behavior on the road,bringing to driving safety hidden trouble in the traffic.The forming mechanism of road's visual illusion and the influence of road traffic safety is of great significance.Road alignment in different visual illusions are classified,mainly divides into: the curve illusion,the road slope of illusion,the speed illusion.The road slope of illusion is a kind of,playing an important role in the traffic accident.But now with the road slope of illusion researched rarely,most of them basic is the study of the theoretical level,for how to run,how to treat,there is no definite effective measures in the present study.Firstly,this paper tried to system analysis of the road slope of illusion caused by the road alignment,the sides of the road environment and the drivers' visual characteristics and so on.The road slope of illusion caused by road alignment and road environment were classified.Through a three-dimensional simulation of driver visual scene,respectively from the road alignment,the sides of the road environment,driving people visual characteristics to discuss formation mechanism of the road slope of illusion.The results show that the road alignment,the sides of the road environment,the drivers' visual characteristics three sides facing slope illusion,brings to the traffic safety hidden trouble.Road alignment of the main factors influencing of the road slope of illusion is difference of slope and slope before long,before and after the vertical curve radius also has an effect on it.On the concave vertical curve hill road,downhill,convex concave vertical curve vertical linear combination curve uphill section of bad road will lead to slope of illusion.Convex vertical curve slope downhill won't produce illusion,bad linear combination will lead to driver visibility is not good.Finally,on the basis of the above theoretical study,to discuss the slope of the illusion of control measures,mainly,from the new roads linear optimization design and control measures in two aspects of the highway.New roads linear optimization design is mainly by controlling the linear gradient and slope length,and continuity of adjacent vertical curve,and so on.Regulation measures for the existing highway,based on the mechanism of formation of the slope of illusion,through 3d simulation drivers visual environment,using the guardrail high tilt,the setting of the fence,road widening,slope to produce the illusion of concave vertical curve hill road,downhill,convex concave vertical curve vertical curve uphill road simulated respectively,respectively,puts forward the corresponding improvement measures.And through the 3d simulation is verified,the effect is remarkable.