Abstract:

The effects of different traffic lights period on the traffic flow were studied based on two dimension BihamMiddletonLevine (BML) model. The simulation results in BML model show that, the average velocity of the vehicles has a sharp change from highspeed phase to lowspeed phase at the certain critical vehicle density with the increase of vehicle density, and this critical density do not strictly decreases with the increase of the traffic lights period. A meanfield theoretical analysis was made,and its results basically agree with the simulation results. Finally, the nonmonotonic phenomenon was futher discussed.

Key words: engineering of communication and transportation, BihamMiddletonLevine(BML) model, traffic lights period, meanfield theory