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.
部分理论引用网络文献，若有侵权联系博主删除。
