Traffic dynamics of an on-ramp system with a cellular automaton model

doi:10.1088/1674-1056/19/6/060501

Abstract This paper uses the cellular automaton model to study the dynamics of traffic flow around an on-ramp with an acceleration lane. It adopts a parameter, which can reflect different lane-changing behaviour, to represent the diversity of driving behaviour. The refined cellular automaton model is used to describe the lower acceleration rate of a vehicle. The phase diagram and the capacity of the on-ramp system are investigated. The simulation results show that in the single cell model, the capacity of the on-ramp system will stay at the highest flow of a one lane system when the driver is moderate and careful; it will be reduced when the driver is aggressive. In the refined cellular automaton model, the capacity is always reduced even when the driver is careful. It proposes that the capacity drop of the on-ramp system is caused by aggressive lane-changing behaviour and lower acceleration rate.

Keywords: lane-changing behaviour acceleration rate cellular automaton model on-ramp system

Received: 25 October 2009
Accepted manuscript online:

PACS:

89.40.Bb

(Land transportation)

Fund: Project supported by the State Key Development Program for Basic Research of China (Grant No.~2006CB705500), the National Natural Science Foundation of China (Grant Nos.~70631001, 70501004 and 70701004), Program for New Century Excellent Talents in Univer

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Li Xin-Gang(李新刚), Gao Zi-You(高自友), Jia Bin(贾斌), and Jiang Rui(姜锐) Traffic dynamics of an on-ramp system with a cellular automaton model 2010 Chin. Phys. B 19 060501

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