【元胞自动机】基于元胞自动机实现双车道靠右行驶交通流模型matlab代码

1 简介

元胞自动机(Cellular Automata,简称CA)模型作为交通流理论的一种重要数学模型,具有时空离散、规则简单、计算效率高、易于实现等特点,一直都是交通流研究的一个热点,具有广阔应用前景。本文在现有元胞自动机交通流模型的基础上,建立双车道元胞自动机交通流模型。

2 部分代码

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % A Two-Lane Cellular Automaton Traffic Flow Model with the Keep-Right Rule %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% clc; clear all; close all; B=3; % The number of the lanes plazalength=100; % The length of the simulation highways h=NaN; % The handle of the image [plaza,v]=create_plaza(B,plazalength); h=show_plaza(plaza,h,0.1); iterations=1000; % Number of iterations probc=0.1; % Density of the cars probv=[0.1 1]; % Density of two kinds of cars probslow=0.3; % The probability of random slow Dsafe=1; % The safe gap distance for the car to change the lane VTypes=[1,2]; % Maximum speed of two different cars [plaza,v,vmax]=new_cars(plaza,v,probc,probv,VTypes);% Generate cars on the lane size(find(plaza==1)) PLAZA=rot90(plaza,2); h=show_plaza(PLAZA,h,0.1); for t=1:iterations; size(find(plaza==1)) PLAZA=rot90(plaza,2); h=show_plaza(PLAZA,h,0.1);%%地图显示 [v,gap,LUP,LDOWN]=para_count(plaza,v,vmax); [plaza,v,vmax]=switch_lane(plaza,v,vmax,gap,LUP,LDOWN); [plaza,v,vmax]=random_slow(plaza,v,vmax,probslow); [plaza,v,vmax]=move_forward(plaza,v,vmax); end

3 真结果

4 参考文献

[1]李松, 张杰, 贺国光. 基于元胞自动机模型的交通流混沌仿真研究[J]. 计算机工程与应用, 2007, 43(32):4.

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