The link transmission model with variable fundamental diagrams and initial conditions

The link transmission model is a macroscopic network traffic flow simulation tool based on Lighthill–Whitham–Richards theory. While its efficiency and accuracy are superior to the well-known cell transmission model, applications of its current numerical formulations are limited by the inability to apply changes to the fundamental diagrams of links within a simulation and the need to start the simulation with an empty network. The authors resolve both limitations by developing a methodology for initialising the discrete-time link model with a non-empty initial condition and for computing within-link densities during the simulation, which can then serve as an initial condition for continued simulation with a new fundamental diagram. Since the computation of within-link densities is algebraic, no new numerical errors are introduced. Optional support for multiple commodities, subcritical delays and platoon dispersion, are retained. The resulting model is demonstrated on a motorway corridor network with variable speed limits and dynamic lane management.

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    • © 2018 Jeroen P T van der Gun et al. Published by Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
  • Authors:
    • van der Gun, Jeroen P T
    • Pel, Adam J
    • Van Arem, Bart
  • Publication Date: 2019-12


  • English

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  • Accession Number: 01731469
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 21 2020 9:50AM