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Design Methods for Safety Enhancement Measures on Long Steep Downgrades
Research Institute of Highway, MOT, China.
MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology Beijing Jiaotong University.
2013 (English)In: Proceedings of the 16th International Conference Road Safety on Four Continents: Beijing, China. 15-17 May 2013, Linköping: Statens väg- och transportforskningsinstitut, 2013Conference paper, Published paper (Other academic)
Abstract [en]

Restricted by the rolling terrains of mountainous areas in western parts of China, long steep downgrades are very common in mountainous freeways. Influenced by the factors like high altitude, big elevation differences, and the severe weather condition e.g. black ice, heavy snow and thick fog, most long steep downgrades turn to traffic accident prone sites. Moreover, once traffic accident happens, the severity is high and the society influence is wide. So the overall safety level of mountainous freeways has been greatly influenced by the safety level of long steep downgrades. In this paper, the safety classification methods and the general design principles of long steep downgrades and the design principles of safety enhancement measures for different sections of long steep downgrades are put forward based on the investigation of typical long steep downgrades in freeways. Then the methods for the safety enhancement measures design on long steep downgrades according to the safety level are expounded. Moreover, the design process of the safety enhancement measures design is presented. The presented research finding provides an important support for the safety enhancement measures design on long steep downgrades.

Place, publisher, year, edition, pages
Linköping: Statens väg- och transportforskningsinstitut, 2013.
Keyword [en]
Mountain road, Gradient, Safety, Classification, Traffic sign, Warning, Arrester bed
National Category
Infrastructure Engineering
Research subject
30 Road: Highway design, 31 Road: Geometric design; X RSXC
Identifiers
URN: urn:nbn:se:vti:diva-7320OAI: oai:DiVA.org:vti-7320DiVA: diva2:758757
Conference
16th International Conference Road Safety on Four Continents. Beijing, China (RS4C 2013). 15-17 May 2013
Available from: 2014-10-28 Created: 2014-10-28 Last updated: 2014-10-28Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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