Empirical Analysis of Traffic Performance Improvement Mechanisms by Audible Speed Recovery Information Provision

DOI Open Access
  • WADA Kentaro
    Faculty of Engineering, Information and Systems, University of Tsukuba
  • KANESAKI Keigo
    Degree Programs in Systems and Information Engineering, Graduate School of Science and Technology, University of Tsukuba
  • NISHIDA Tadashi
    Hachioji Branch, Central Nippon Expressway Company Ltd.
  • HIRAI Shoichi
    Hachioji Branch, Central Nippon Expressway Company Ltd.

Bibliographic Information

Other Title
  • 音声による速度回復情報提供の交通性能改善メカニズムの実証分析

Abstract

<p>This paper explores the improvement mechanisms of traffic performance such as the traffic capacity before congestion and the queue discharge flow rate by the audible speed recovery information provision introduced as a congestion measure at the Kobotoke tunnel of Chuo Expressway, Japan. Specifically, we apply the recent advanced traffic flow theory for endogenously describing the capacity drop phenomenon at sag and tunnel bottlenecks (Jin, 2018; Wada et al., 2020) to data measured before and after the introduction of the system and compare results. We then show that (i) the improvements in traffic capacity before congestion and the queue discharge flow rate can be explained by a common mechanism “reduction of safety time gap” within the bottleneck section; (ii) the improvement in acceleration during the congestion at the end of the bottleneck section does not result in that in queue discharge flow rate, and thereby there is room for further improvement.</p>

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Details 詳細情報について

  • CRID
    1390576689850534272
  • DOI
    10.14954/jste.9.2_a_326
  • ISSN
    21872929
  • Text Lang
    ja
  • Data Source
    • JaLC
    • KAKEN
  • Abstract License Flag
    Disallowed

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