Electron hole microscopic traffic flow modeling method in density unsaturation state

Abstract

To solve the technical problem that an existing car-following model and actual traffic conditions are inconsistent so that the traffic flow statistics and intersection signal lamp control cannot be achieved, the invention provides an electron hole microscopic traffic flow modeling method in a density unsaturation state. According to the method, random variation of front car influences in a traffic flow speed model under the multi-lane conditions is considered according to four actual traffic conditions including normal queuing, traffic signal lamps stopping running cars, inserting of other cars caused by too large car following distances and car inserting of a current lane caused by too large car following distances of adjacent lanes, parameters such as equivalence speeds and traffic flow density of a macroscopic traffic flow model are introduced simultaneously, and car running lanes and influences of the car running lanes on the adjacent lanes are considered. The built novel microscopic traffic flow model is close to reality, and the traffic flow modeling technology in new roads design existing road running management and intersection signal lamp control is achieved.

Description

Technical field [0001] The invention relates to a traffic flow model modeling method, in particular to an electron hole microscopic traffic flow modeling method in a density unsaturated state. Background technique [0002] In order to design new roads more rationally, to simulate and verify existing road operation management and intersection signal light control schemes, it is often necessary to establish a traffic flow model so that the transportation capacity can be exerted even more with the same transportation facilities. [0003] Transportation is a major issue related to the national economy and people’s livelihood. The modernization degree of the transportation system and the advanced degree of traffic management are important indicators to measure the degree of modernization of a country. In recent years, with the economic development, the number of various means of transportation has greatly increased. The facilities, roads, and traffic management systems in many countries...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the technical problem that the existing car-following model is inconsistent with the actual traffic conditions and cannot be used in traffic flow statistics and signal lights control at intersections, the present invention provides an electron-hole microcosmic traffic flow modeling method in a state of unsaturated density. Method In the multi-lane situation, the influence of the front vehicle in the traffic flow speed model is divided into four types: normal driving, traffic lights stop driving vehicles, too large following distance causes other vehicles to intervene, and adjacent lane following distance causes the current lane vehicle to intervene. Random changes in actual traffic conditions, while introducing parameters such as the equivalent speed and traffic flow density of the macroscopic traffic flow model, taking into account the impact of vehicle driving lanes and adjacent lanes, making the established new microscopic traffic flow model closer to reality , which solves the technical problems of traffic flow modeling in the design of new roads, the operation management of existing roads and the control of traffic lights at intersections

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