Violating traffic light behavior in the Biham-Middleton-Levine traffic flow model

Abstract

Effects of violating traffic light behavior are studied in this paper based on the cellular automata (CA) model proposed by Biham-Middleton-Levine (BML). We define two kinds of drivers: one obeys the traffic light rule, the other ignores it. Simulation results show that the violator increases the average velocity of free flowing phase while decreases the critical car density. We predicted the average velocity in the free flowing phase by ignoring the correlation among cars. A phase separation phenomenon, where jams and freely flowing traffic coexist, has been found in intermediate car density range. The occurrence reason of phase separation has been explained.