A Calculation Method of Intersection Operational Efficiency Based on Directed Bipartite Weighted Network
A technology of operating efficiency and weight network, which is applied in the traffic control system of road vehicles, traffic flow detection, traffic control system, etc., and can solve the problems of not being able to reflect the traffic conditions and not considering the topology of the road network
Active Publication Date: 2020-09-25
ENJOYOR COMPANY LIMITED
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However, there are certain limitations in these methods: (1) The calculation method of the above-mentioned intersection operation efficiency is mainly based on the VISSIM simulation software, which cannot reflect the actual traffic conditions; (2) Most of the calculations of the indicators do not consider the topological structure of the road network
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[0021] The present invention will be further described below in conjunction with specific examples, but the present invention is not limited to these specific implementations. Those skilled in the art will realize that the present invention covers all alternatives, modifications and equivalents as may be included within the scope of the claims.
[0022] This embodiment provides a method for calculating the operational efficiency of an intersection based on a directed binary weight network, which includes the following steps:
[0023] (1) Steps to establish a directed bipartite network at an intersection
[0024] Assume that the road segment to the intersection is M i , the number is m, and the road section away from the intersection is N j , the number is n, with the road section as the node, and the intersection connecting the entry and exit sections as the line segment, construct a directed bipartite network of intersections such as figure 1 As shown, since the U-turn flo...
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The invention provides an intersection operating efficiency calculating method based on a directed bipartite weight network. The method comprises the steps that 1, the intersection directed bipartitenetwork is built with road sections as nodes and intersections for connecting the road sections as line segments; 2, according to collected traffic flow data, weights of all the line segments in the intersection directed bipartite network are obtained; 3, based on construction of the directed bipartite weight network, the efficiency of the intersection directed bipartite weight network is calculated, and the intersection operating efficiency is obtained. Through the construction of the intersection directed bipartite network and effective estimation of the weights of the line segments in the network, the intersection operating efficiency is obtained, and the result can be used in a traffic guidance and control system.
Description
technical field [0001] The invention belongs to the field of traffic control, and relates to a method for calculating the operating efficiency of an intersection based on a directed binary weight network. Background technique [0002] The state of urban road network is the basis of traffic control and traffic guidance. Traffic congestion seriously affects the sustainable development of cities. The essential cause of traffic congestion is that the traffic supply capacity does not match the traffic demand, resulting in the concentration of local traffic flow and the waste of traffic time and space resources. The intersection is the node of the urban road network, and also the key point of vehicle gathering, turning and evacuation. Effective calculation of intersection operation efficiency is the premise of formulating reasonable and effective traffic control and guidance decision-making, an important way to improve road traffic efficiency, and the key to alleviating traffic ...
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IPC IPC(8): G08G1/01
CPCG08G1/0104G08G1/0125G08G1/0137
Inventor 郭海锋徐东伟肖雪梅徐甲袁鑫良方祺伟温晓岳
Owner ENJOYOR COMPANY LIMITED