Analysis of a Two-Regime Stochastic Car-Following Model: Explaining Capacity Drop and Oscillation Instabilities

This paper presents analysis of a Newell-type stochastic car-following model based on stochastic desired acceleration processes. This formulation was shown to generalize previous efforts based on Brownian and geometric Brownian acceleration processes, each reproducing a different feature of the traffic instabilities. Here, we show that the unified model is able to capture virtually all types of traffic instabilities consistently with empirical data, including formation and propagation of oscillations, capacity drop in the absence of lane changes and the concave growth pattern of vehicle speeds along a platoon.

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    • The Standing Committee on Traffic Flow Theory and Characteristics (AHB45) peer-reviewed this paper (19-05914). © National Academy of Sciences: Transportation Research Board 2019.
  • Authors:
    • Xu, Tu
    • Laval, Jorge A
  • Publication Date: 2019-10


  • English

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  • Accession Number: 01711234
  • Record Type: Publication
  • Report/Paper Numbers: 19-05914
  • Files: TRIS, TRB, ATRI
  • Created Date: Apr 26 2019 3:03PM