Modified car-following microscopic traffic flow modeling method considering plurality of cars in front

Abstract

The invention discloses a modified car-following microscopic traffic flow modeling method considering a plurality of cars in the front. The technical problem that signal lamps cannot be controlled at crossroads due to the fact that a prior car-following model is inconsistent with actual traffic conditions is solved. The variance ratio of optimized rate of a plurality of cars in the front relative to car distances, delay time of front car action and weighting factors of front car action are introduced in a traffic flow velocity model, parameters such as the number of cars in the front and the delay time and weighting factors of front car action are considered and adjusted in accordance with actual traffic conditions, the novel established microscopic traffic flow model is actual, and the traffic flow modeling technical problems in the new road design, management of the prior road operation and control of signal lamps of crossroads are solved.

Description

technical field [0001] The invention relates to a traffic flow model modeling method, in particular to an improved car-following microscopic traffic flow modeling method considering multiple vehicles ahead. Background technique [0002] In order to design new roads more rationally, and conduct simulation verification on existing road operation management and intersection signal light control schemes, it is often necessary to establish a traffic flow model in order to maximize the transportation capacity of the same traffic facilities. [0003] Transportation is a major issue related to the national economy and people's livelihood. The degree of modernization of the transportation system and the advanced degree of traffic management are important symbols to measure the degree of modernization of a country. In recent years, with the development of the economy, the number of various means of transportation has increased greatly. The facilities, roads, and traffic management sys...

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 control the signal lights at the intersection, the present invention provides an improved car-following micro-traffic flow modeling method considering multiple vehicles ahead. Introduced in the optimal speed of multiple vehicles ahead, the rate of change of the distance between vehicles, the lag time of the vehicle in front and the weighting factor can be adjusted according to the actual traffic conditions. Factors and other parameters make the established new micro-traffic flow model closer to reality, and solve the technical problems of traffic flow modeling in the design of new roads, the operation management of existing roads and the control of intersection signal lights

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