The Application of the Cellular Automata in Simulating and Analyzing Two-Dimensional Traffic Model

摘要

Using the BML (Biham, Middleton and Levine) model, a special one of the Cellular Automata models, the paper simulates and analyzes the two-dimensional traffic system controlled by traffic lights. The relationship among original density, average density and average speed of the traffic flow can be found through computer programs. It can be seen self-organization phenomenon existed in the processing from the traffic jam status to the movement status when the average density keeping invariable. Then it analyzes the relationship between the position of critical point and the average density. At last it shows the function of critical density in real traffic control.