Study On The Setting Of Main Road Entrances And Exits And The Optimization Of Traffic Organization

According to relevant regulations,in principle,it is not advisable to set project entrances and exits on trunk roads.However,in the construction process of project investment promotion,due to the location of the project land,the flow of people or craftsmanship of the project,the density of the road network does not meet the standards,etc.,trunk roads may be inevitable.Set up some entrances and exits.In recent years,the intensity of land use on both sides of urban arterial roads has increased significantly,and more and more entrances and exits have been set up on arterial roads.While improving the accessibility between regions,it also has a negative impact on the traffic flow of arterial roads.For example,reducing the traffic efficiency of arterial roads will affect the normal driving of vehicles on arterial roads;when vehicles slow down or change lanes,they will also affect the operation of adjacent lanes;when entering and exiting projects,queues may occur and occupy the main road lanes,which is likely to form bottleneck sections.Whether the layout of the main road entrances and exits and the traffic organization of the entrances and exits are reasonable is related to the efficiency and safety level of the traffic operation around the building.Therefore,it is very important to optimize the design of the entrances and exits of the urban main roads.In order to improve travel efficiency and reduce the impact on road traffic,this article combines the road conditions of the Xi’an National Civil Aerospace Industry Base to analyze the problems of the main road entrances and exits.First,carry out the investigation and analysis of regional current road traffic and analysis of regional functions and traffic planning content;secondly,analyze and study the types of main road entrances and exits,entrance and exit positions,entrance and exit width and turning radius,entrance and exit traffic organization form,entrance and exit traffic facilities,etc.In combination with the existing regulations on the setting of entrances and exits and the actual situation of the space base,relevant suggestions for the setting of entrances and exits are put forward.Then,carry out traffic organization optimization design research on main road entrances and exits,analyze the traffic organization optimization of auxiliary roads,and optimize the traffic organization of side openings,and optimize the traffic organization of current entrances and exits.Use VISSIM to simulate and compare and analyze different solutions.The overall delay.Finally,take multi-side adjacent road projects and adjacent bridge projects as examples to carry out entrance and exit design and traffic organization,compare and analyze different design schemes,and provide relevant suggestions for the setting of entrances and exits of the aerospace base and optimization of traffic organization.