Study On The Mode Of Turning To Road In Urban Section

Because the city road intersection signal control,speed control and other reasons caused by urban traffic flow on the road network intermittent,resulting in urban sections on the diversification and complexity of the traffic flow characteristics.In order to study the flow characteristics of vehicles in urban sections,it is necessary to analyze the vehicle's follow-up and lane changing behavior on the urban road network.The follow-up behavior of the vehicle,domestic and foreign scholars have made a more general and effective research,the article focuses on the vehicle in the city section of the road.The study of follow-up behavior,domestic and foreign scholars have made a more extensive and effective research,this article mainly study the city road on the road behavior.The deterministic lane change behavior caused by route selection on the urban road segment is of great significance to study the lane changing behavior on the city road.Turning to the road is one of the main lane changes on the road section,and it is also the main factor affecting the efficiency of the road section one.Based on the summary of the vehicle lane changing classification method,and according to the characteristics of urban road traffic flow by selecting in the proposed turning lane changing demand,on the basis of this concept,do the following several aspects work:First of all,divide the lane changing behavior of urban road section for turning lane changing and random change.,on the basis of the assumption that urban roads channelized model for the location of the vehicles on urban roads can be divided into freedom of lane changing section,forced lane changing section and lane changing section is prohibited.Derive the urban road traffic to flow,the urban road lanes to swap out flow,city road lane to change into the flow,road to the lane changing rate and the lanes in theoretical calculation formula,such as lane changing rate.And use actu al data to validate the theoretical formula is derived and deviation analysis.Are calculated and analyzed by after routing the driveway to the traffic lane,to change into the traffic lane,lane to the flow rate change,to change the flow rate,the influence of the way Banks.Secondly,analyzed the urban road section driver right caused by the demand uncertainty lane-changing behavior of urgent degree,urban roads can be divided into freedom of lane changing section,forced lane changing section and lane changing section is prohibited.Analyzed the characteristics of the actual city road lane changing behavior,puts forward the concept of lane changing decision points as a free lane changing section and mandatory cut-off lane changing section.Theory in the decision point is related to the state of traffic flow,velocity of dynamic point,lane changing decision point incarnates the longitudinal dynamic urban road traffic flow,this paper USES probability theory of mathematical method is derived and established the calculation method of dynamic lane changing decision points.Finally,set up different cities turning lane changing model of lane changing model,the model describes the routing in the far and near the downstream intersection downstream intersection,the traffic flow and lane changing vehicle lane changing stress state leads to different forms of lane changing.Model respectively with free lane changing conditions and distinguish between compulsory lane changing conditions,closer to the motion state and conforms to the urban road traffic flow.In addition,this paper establish urban road to lane-changing model select matlab language to write the simulation program of city road.Take the initial data and rules to set of procedures,the simulation results using animation output and file output in two ways.In this paper,using the actual data and the results of simulation analysis and simulation model is proved to be practical,and the data in the further analysis and study some characteristics of urban road traffic lane changing.