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Title: An improved cellular automata model for heterogeneous work zone traffic
Authors: Meng, Q. 
Weng, J.
Keywords: Cellular automata
Heterogeneous traffic
Model calibration and validation
Traffic delay
Traffic simulation
Work zone
Issue Date: Dec-2011
Citation: Meng, Q., Weng, J. (2011-12). An improved cellular automata model for heterogeneous work zone traffic. Transportation Research Part C: Emerging Technologies 19 (6) : 1263-1275. ScholarBank@NUS Repository.
Abstract: This paper aims to develop an improved cellular automata (ICA) model for simulating heterogeneous traffic in work zone. The proposed ICA model includes the forwarding rules to update longitudinal speeds and positions of work zone vehicles. The randomization probability parameter used by the ICA is formulated as a function of the activity length, the transition length and the volumes of different types of vehicles traveling across work zone. Compared to the existing cellular automata models, the ICA model possesses a novel and realistic lateral speed and position updating rule so that the simulation of vehicle's lateral movement in work zone is close to the reality. The ICA model is calibrated and validated microscopically and macroscopically by using the real work zone data. Comparisons of field data and ICA for trajectories, speed and speed-flow relationship in work zone show very close agreement. Finally, the proposed ICA model is applied to estimate traffic delay occurred in work zone. © 2011 Elsevier Ltd.
Source Title: Transportation Research Part C: Emerging Technologies
ISSN: 0968090X
DOI: 10.1016/j.trc.2011.02.011
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