A compositional stochastic model for real-time freeway traffic simulation.

Boel, R. and Mihaylova, Lyudmila (2006) A compositional stochastic model for real-time freeway traffic simulation. Transportation Research Part B: Methodological, 40 (4). pp. 319-334. ISSN 0191-2615

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Traffic flow on freeways is a non-linear, many-particle phenomenon, with complex interactions between vehicles. This paper presents a stochastic model of freeway traffic at a time scale and of a level of detail suitable for on-line estimation, routing and ramp metering control. The freeway is considered as a network of interconnected components, corresponding to one-way road links consisting of consecutively connected short sections (cells). The compositional model proposed here extends the Daganzo cell transmission model by defining sending and receiving functions explicitly as random variables, and by also specifying the dynamics of the average speed in each cell. Simple stochastic equations describing the macroscopic traffic behavior of each cell, as well as its interaction with neighboring cells are obtained. This will allow the simulation of quite large road networks by composing many links. The model is validated over synthetic data with abrupt changes in the number of lanes and over real traffic data sets collected from a Belgian freeway.

Item Type:
Journal Article
Journal or Publication Title:
Transportation Research Part B: Methodological
Additional Information:
The final, definitive version of this article has been published in the Journal, Transportation Research Part B -- Methodological. 40 (4), 2006, © ELSEVIER.
Uncontrolled Keywords:
?? macroscopic traffic modelsfreeway trafficstochastic systemssending and receiving functionsdcs-publications-idart-752dcs-publications-personnel-id121management science and operations researchtransportationqa75 electronic computers. computer science ??
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11 Dec 2007 14:23
Last Modified:
11 Apr 2024 23:58