Method for determining passageway distance of port road on the basis of two-dimensional cellular automaton model

Abstract

Belonging to the technical field of road design, the invention relates to a method for determining a passageway distance of port roads on the basis of a two-dimensional cellular automaton model. The method determines the distance design of port road passageways by simulating the driving process of a tractor-semitrailer while leaving a no signal traffic passageway and entering a road, and the method comprises the steps of: establishing a mathematical model of the tractor-semitrailer while turning right to leave the passageway; establishing a cellular automaton model about the driving of the tractor-semitrailer at the road passageway; establishing a simulation rule for the tractor-semitrailer to leave the passageway; establishing a road section simulation driving rule for a vehicle after leaving the passageway and entering the road section; carrying out simulation experiments under the conditions of different passageway distances and departure frequency, and analyzing the simulations so as to obtain a traffic flow time-space diagram and vehicle delay data, thus obtaining an appropriate passageway distance under different traffic conditions. The method of the invention can precisely reflect the influence of a passageway distance on port road traffic capacity, thus providing a method for determining the port road passageway distance under different conditions.

Description

technical field [0001] The invention belongs to the technical field of road design and relates to a method for determining the distance between entrances and exits of roads in a port area. Background technique [0002] Road entrance and exit spacing is an important part of road entrance and exit management research, which is related to road function classification, speed, traffic flow, number of conflict points, separation of conflict areas, control methods and other factors. In 1999, the National Cooperative Highway Research Project (NCHRP) of the U.S. Transportation Research Board (TRB) conducted research on road access management technology. In the report, a mathematical model between different entrance and exit distances and accident rates was established, and it was used to determine the road entrance and exit. Basis for spacing. With the development of computational simulation technology, some foreign researchers use VISSIM, TSIS and other simulation software, combine...

AI Technical Summary

Problems solved by technology

The basic theories of traffic capacity, traffic safety, separation and merging, and interweaving require the study of the interaction mechanism between individual vehicles as the basis, so that the impact of vehicles entering and exiting the entrance and exit on the traffic on the main road can be refined, but the existing technology cannot or can only simulate the performance Research on traffic capacity, traffic safety, divergence and confluence, interweaving, etc. with road sections as units

[0007] According to the analysis of the above-mentioned background technology, it can be known that the existing technology is unable to analyze and study the entrance and exit distance of port roads based on the basic theories of traffic capacity, traffic safety, separation and confluence, and interweaving based on the research on the mutual influence mechanism between vehicle monomers. There is a certain deviation in the conclusion of the research on the distance between road entrances and exits

Images