Research On The Access System Of Urban Road

The phenomenon of random openings on both sides of urban roads is becoming more serious with the urban road use intensity enhanced so it is necessary to restrict and regulate the locating, layouting and designing of roads to access to improve urban road traffic safety and efficiency to promote urban to develop healthily.The entrance and intersection is defined in the thesis firstly and three categories of spacing type is identified,and that is intersection and intersection, intersections and entrances, exits and entrances respectively, and the intersection functional area and the access road intersection effect region is also defined. In support of the relevent theory, the range values of the intersection functional area and the access road intersection influence region is calculated seperately to provide technical support for spacing standards of different types of spacing.Secondly, analyze the location of the access roads based on the spacing standards.Analyze attracting and arising traffic volume and road capacity in the optional region of access roads. Determine the location, number of lanes and number of entrances and exits under the acceptable level of service, meanwhile, analyze the geometric index of the access road, including the layout of the form of access road width, turning radius, depth, and drainage of throat diameter Island.Analyze and summarize the existing problems of current urban road entrances and exits eventually. Organize the traffic of the region's motor vehicle access, non-motor vehicles, pedestrians reasonably and give corresponding solutions .