Circulatory Markings at Double-Lane Traffic Roundabout.

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

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Scopus)


This paper compares two types of circulatory markings at a double-lane traffic roundabout: the concentric marking scheme and the Alberta marking scheme. The effects of these two marking schemes on drivers' lane choice behavior, delay, and safety, are compared based on data collected from before and after field surveys over a period of 2 years. The results showed that the Alberta marking scheme could better balance the traffic flows on the two circulatory lanes, resulting in higher performance levels.
Original languageUndefined
Pages (from-to)378-388
Number of pages11
JournalJournal of transportation engineering
Issue number9
Publication statusPublished - 2008


  • IR-73892
  • METIS-249666

Cite this