English: A lattice for the w:Biham-Middleton-Levine traffic model after 64000 iterations. The lattice is 512 by 512, with a traffic density of 31%. The red cars and blue cars take turns to move; the red ones only move rightwards, and the blue ones move downwards. Every time, all the cars of the same colour try to move one step if there is no car in front of it. The initial position before running is shown in File:Bml x 512 y 512 p 31 iterated 0.png. The graph of mobility versus time (mobility is the number of cars that can move in a particular turn) is shown at File:Bml x 512 y 512 p 31 MOBILITY.png. This was created with C++. Source code is located at w:user:Purpy Pupple/BML.