The effect of lane utilization on the capacity of multi-lane traffic roundabout

Jing Bie, Hong K. Lo, S. C. Wong

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

Capacity of traffic roundabout is typically captured by the entry capacities of individual approaches while considering the effects of conflicting flows. Moreover, capacity of multi-lane roundabout is conventionally evaluated through a flow aggregation methodology. Multi-lane roundabout is there of treated similarly to a single-lane roundabout but of a larger size. This paper analyzes the effect of lane utilization on the capacity of multi-lane roundabout. Through a flow separation methodology, entry capacity is determined for each entry lane rather than aggregated for each approach. Kimber's formulae for entry capacity are adopted for this analysis. The results show that capacity estimated by flow separation could be considerably lower than that by aggregation method. Moreover, the flow balance among circulating lanes plays an important role in the roundabout performance.

Original languageEnglish
Title of host publicationTransportation and the Economy - Proceedings of the 10th International Conference of Hong Kong Society for Transportation Studies, HKSTS 2005
Pages431-440
Number of pages10
Publication statusPublished - 2005
Externally publishedYes
Event10th International Conference of Hong Kong Society for Transportation Studies: Transportation and the Economy, HKSTS 2005 - Kowloon, Hong Kong
Duration: 10 Dec 200510 Dec 2005

Publication series

NameTransportation and the Economy - Proceedings of the 10th International Conference of Hong Kong Society for Transportation Studies, HKSTS 2005

Conference

Conference10th International Conference of Hong Kong Society for Transportation Studies: Transportation and the Economy, HKSTS 2005
Country/TerritoryHong Kong
CityKowloon
Period10/12/0510/12/05

ASJC Scopus subject areas

  • Automotive Engineering
  • Civil and Structural Engineering
  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality

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