Traffic flow model simulation method and system and abnormal traffic event prediction method

Abstract

The invention discloses a traffic flow model simulation method and system and an abnormal traffic event prediction method, and relates to the technical field of traffic management.The method comprises the steps that firstly, a traffic flow model is constructed based on the cellular automaton theory; initializing the traffic flow model, and setting an initial moment t to be equal to 1 and a simulation termination moment to be T; traversing the vehicle information array by using a traffic flow model, and determining the attribute of the current cellular occupying vehicle; according to the attribute of the current cellular occupying vehicle, based on the position of the current cellular in the road network, vehicle state updating is carried out; tlt is judged; judging whether T is true or not, if yes, enabling t to be equal to t + 1, and returning to the model traversal step; and if not, the simulation is ended. According to the traffic flow model simulation method provided by the invention, the evolution law of the traffic flow under typical traffic events can be simulated, so that traffic abnormal events are prevented and controlled, and the influence caused by traffic accidents is reduced.

Description

technical field [0001] The invention relates to the technical field of traffic management, and more particularly to a traffic flow model simulation method, system and abnormal traffic event prediction method. Background technique [0002] The highway tunnel is in a semi-enclosed space, with poor lighting conditions, more exhaust and dust, complex traffic environment, many factors affecting driving, and the possibility of accidents is high. accident, the severity of the accident is high. The traffic changes in the expressway tunnel also have a certain impact on the traffic operation of the road section outside the tunnel. When there is congestion or an accident in the tunnel, the traffic congestion of the entire expressway is usually caused, which greatly reduces the traffic operation efficiency of the expressway tunnel area. and safety level. [0003] At present, although my country's expressway tunnel area is equipped with many electromechanical facilities, there is still...

AI Technical Summary

Problems solved by technology

[0002] The expressway tunnel is in a semi-enclosed space, with poor light conditions, a lot of exhaust gas and dust, complex traffic environment, many factors affecting driving, and a high possibility of accidents. At the same time, after the accident, rescue is relatively difficult, which is likely to cause tunnel congestion or secondary accidents. Accidents with high severity

Traffic changes in the expressway tunnel also have a certain impact on the traffic operation of the section outside the tunnel. When congestion or accidents occur in the tunnel, it will usually cause traffic congestion on the entire section of the expressway, greatly reducing the traffic operation efficiency of the section of the expressway tunnel area and security level

[0003] At present, although the expressway tunnel area in my country is equipped with many electromechanical facilities, there is still a lot of room for improvement in terms of operational safety. The traffic safety monitoring and emergency response in the tunnel area are far from enough, and there is a lack of association with traffic-related data in the tunnel area. Analysis, unable to prevent and control abnormal traffic events, lack of timely and accurate judgment on abnormal traffic events, resulting in the expansion of the scope of accident impact

Images