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Platoon-based traffic flow model for estimating breakdown probability at single-lane expressway bottlenecks

Authors
Journal
Transportation Research Part B Methodological
0191-2615
Publisher
Elsevier
Publication Date
Volume
45
Issue
9
Identifiers
DOI: 10.1016/j.trb.2011.05.008
Keywords
  • Traffic Breakdown
  • Breakdown Probability
  • Platoons
  • Desired Speed Distribution
  • Expressways Bottlenecks
Disciplines
  • Mathematics

Abstract

Abstract This study investigates the mechanism of traffic breakdown and establishes a traffic flow model that precisely simulates the stochastic and dynamic processes of traffic flow at a bottleneck. The proposed model contains two models of stochastic processes associated with traffic flow dynamics: a model of platoon formation behind a bottleneck and a model of speed transitions within a platoon. After these proposed models are validated, they are applied to a simple one-way, one-lane expressway section containing a bottleneck, and the stochastic nature of traffic breakdown is demonstrated through theoretical exercises.

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