Macroscopic traffic modeling of heterogeneous road networks using colored Petri nets
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Date
2017-07Type
- Conference Paper
ETH Bibliography
no
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Abstract
Coloured Petri nets (CPN) is adopted for representing the traffic state and dynamics of each subregion, derived by the partitioning of a heterogeneous road network, in order to take advantage of well-defined MFDs. Firstly, the tokens in places of Petri nets stand for the number of vehicles in each subregion, and different colours of tokens are used to represent the OD matrix between subregions. Secondly, the directed transitions between places (i.e. the corresponding subregions) are defined as the possible route between each OD pair, and the time delay of a transition can be derived from the travel time of a specific route between two adjacent places. Equivalently, the weight of a transition can be associated with the completed traffic outflow, which is determined by the existing MFD, considering the state of the transition’s origin place (i.e. number of vehicles in this subregion). Thirdly, the firing rules of transitions in Petri nets is designed considering asynchronous concurrency of traffic dynamics between any two adjacent subregions. Finally, network performances can be evaluated by average number of vehicles and mean sojourn time in a subregion, etc. The simulation verifies the effectiveness of our CPN model. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000276018Publication status
publishedEvent
Subject
Traffic dynamics; MFD (Macroscopic Fundamental Diagram); Petri nets; Perimeter conrol; Route guidanceOrganisational unit
08686 - Gruppe Strassenverkehrstechnik
02655 - Netzwerk Stadt und Landschaft D-ARCH
Notes
Conference lecture held on 5 July 2017.
Due to copyright restrictions, the full text had been withdrawn on September 6, 2019.More
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