THEORETICAL ANALYSIS ON THE VISIBILITY OF RAISED-RIB ROAD MARKINGS ON A RAINY NIGHT

• IMADA Hirofumi

  THE JAPAN SOCIETY OF CIVIL ENGINEERS

Bibliographic Information

Other Title

• 夜間雨天時における凹凸区画線の視認性に関する理論的考察
• ヤカン ウテンジ ニ オケル オウトツ クカクセン ノ シニンセイ ニ カンスル リロンテキ コウサツ

Abstract

The purpose of this study is to discuss the effect of rainfall, the shape of a convexity and the density of convexities on the visibility of raised-rib road marking on a rainy night, and the characteristics and the effect of raised-rib road marking were confirmed.<br>The summary of the obtained new results from this study is below. Firstly the convexities do not always improve the retro-reflection from raised-rib road marking on a rainy night. Secondly in order to get retro-reflective coefficient from the slope of a convexity more than marginal value it is important to keep the slope degree of a convexity. Thirdly it is effective against improving visibility to increase the weight of sprayed glass beads on the slope. Finally the height of a convexity should be determined according to rainfall, the density of convexities and so on.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 1999 (618), 15-26, 1999-04-20

  Japan Society of Civil Engineers

Keywords

• visibility on a rainy night
• raised-rib road marking
• retro-reflection
• depth of rain flow
• theoretical analysis

Details

• CRID: 1390282680286829056
• NII Article ID: 10002529287
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.1999.618_15
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 4713337
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4713337
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/1999/618/1999_618_15/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed