Relationship between Shape of Slope and Speed Reduction Effect of Sinusoidal Hump

DOI
  • INADA Ryuichi
    Graduate School of Science and Engineering, Saitama University
  • Rahman Mursheda
    Graduate School of Science and Engineering, Saitama University
  • KOJIMA Aya
    Graduate School of Science and Engineering, Saitama University
  • KUBOTA Hisashi
    Graduate School of Science and Engineering, Saitama University

Bibliographic Information

Other Title
  • サイン形状ハンプの勾配部のばらつきと速度抑制効果に関する研究

Description

<p>In this study, we investigated the relationship between the shape, vertical acceleration and speed suppression effect of humps, which have been installed in various places in reference to the technical standards of the Ministry of Land, Infrastructure, Transport and Tourism. As a result, it was found that some of the cast-in-place asphalt humps were lower in height than the standard, and some of them had a small slope, which did not reproduce the shape of the sine wave, and had a small maximum slope. From the results of the speed survey, it was found that the smaller the uphill maximum gradient, the smaller the speed suppression effect during hump passage. According to the acceleration survey, the vertical acceleration of the backrest of the driver's seat tended to be smaller as the upward maximum gradient was smaller. It is considered that the discomfort caused by the vertical acceleration is reduced and the speed suppressing effect is not sufficiently exerted.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390565134826058496
  • NII Article ID
    130007795555
  • DOI
    10.14954/jste.6.2_a_206
  • ISSN
    21872929
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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