Highway traffic guidance method

Abstract

The invention provides a highway traffic dispersion method, comprising the steps as follows: determining a site N, an end position M of a queue caused by an accident, an upstream intersection set O1 directly connected to M and a downstream intersection set D1 directly connected to N in case of traffic accident, wherein an intersection set Oi is an upstream intersection set directly connected to the intersection of an intersection set Oi-1, an intersection set Oj is a downstream intersection set directly connected to the intersection of an intersection set Oj-1, the dispersion scope is expressed as follows: when n=1 and m=1, the initial dispersion scope is (O1, D1); the traffic dispersion is carried out in the dispersion scope by means of a secondary allocation traffic dispersion method; and the rationality for the dispersion result is judged as follows: the dispersion result is rational and a dispersion scheme is generated on the condition that the traffic flow in each dispersion section is not in excess of the actual traffic capacity thereof; otherwise, the dispersion scope is expanded, and then the traffic dispersion is carried out in the expanded dispersion scope by means of the traffic dispersion method based on secondary allocation.

Description

technical field [0001] The invention relates to determining the traffic diversion range and the dredging scheme within the range according to the length of the congestion queue caused by the event, the layout of the road network around the road section where the accident occurred, and the traffic flow conditions after a sudden traffic incident on the highway leads to congestion and queuing. Provide a basis for the handling of unexpected traffic incidents and the implementation of traffic handling measures. It belongs to the field of road traffic control. Background technique [0002] After a sudden traffic incident occurs on the highway, it will seriously affect the normal operation of the traffic. It is necessary to timely and reasonably manage the traffic volume that does not enter the congested road section, so as to avoid the deterioration of traffic congestion and alleviate the adverse effects caused by the incident. In order to ensure the rationality of grooming, it i...

AI Technical Summary

Problems solved by technology

Scholars at home and abroad have done some research on traffic management in emergencies, but there are some deficiencies in the existing research: (1) most of the existing models or methods are aimed at urban traffic emergencies, due to the road network structure and The flow characteristics are different from the urban road network, and the existing dredging methods cannot be applied to the dredging of highway traffic emergencies; (2) the existing traffic dredging methods, the dredging objectives established around the minimum network cost, the minimum total time or the The accessibility is good, and the speed of the dredging plan is slow and the efficiency is low. However, the time requirement for handling unexpected traffic accidents on the highway is relatively urgent, so the dredging method should be determined with the goal of rapid dredging.

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