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    Off-ramp coupling conditions devoid of spurious blocking and re-routing

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    1708.00529v1.pdf
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    Genre
    Pre-print
    Date
    2018-01-01
    Author
    Salehi, N
    Somers, J
    Seibold, B
    Subject
    physics.soc-ph
    physics.soc-ph
    35L65, 35Q91, 91B74
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/4817
    
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    DOI
    10.1177/0361198118792997
    Abstract
    © National Academy of Sciences: Transportation Research Board 2018 When modeling vehicular traffic flow on highway networks via macroscopic models, suitable coupling conditions at the network nodes are crucial. Frequently, the evolution of traffic flow on each network edge is described in a lane-averaged fashion using a single-class Lighthill-Whitham-Richards model. At off-ramps, split ratios (i.e., what percentage of traffic exits the highway) are prescribed that can be drawn from historical data. In this situation, classic FIFO coupling conditions yield unrealistic results, in that a clogged off-ramp yields zero flux through the node. As a remedy, non-FIFO conditions have been proposed. However, as we demonstrate here, those lead to spurious re-routing of vehicles. A new coupling model, FIFO with queue (FIFOQ), is presented which preserves the desirable properties of non-FIFO models while not leading to any spurious re-routing.
    Citation to related work
    SAGE Publications
    Has part
    Transportation Research Record
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    For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.34944/dspace/4799
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