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Article: Performance evaluations of the spiral-marking roundabouts in Hong Kong

TitlePerformance evaluations of the spiral-marking roundabouts in Hong Kong
Authors
KeywordsIntersections
Driver behavior
Traffic surveys
Traffic management
Traffic safety
Issue Date2012
PublisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/te.html
Citation
Journal of Transportation Engineering, 2012, v. 138 n. 11, p. 1377-1387 How to Cite?
AbstractThe Hong Kong Transport Department initiated a trial of the spiral-marking system on four roundabouts in different phases between January 2004 and August 2008. In this study, observational and questionnaire surveys were conducted to assess how the proposed roundabout marking system affected driver behavior, level of service, and safety performance. The vehicle travel time, number of conflicts, crash incidence, and weaving movements were assessed before and after the implementation in the observation surveys, and the perceived safety, congestion level, and lane-changing difficulties were assessed through questionnaire surveys, respectively. Generally, drivers preferred the spiral-marking roundabout to conventional roundabouts, especially after trialing the new marking system. Inexperienced drivers, in particular, appreciated the spiral-marking system because of the increased safety level, reduced congestion level, and increased ease of navigation. On the other hand, the results of the observational survey indicated that there was no unfavorable change in the average approach lane choice, circulating time, and lane-crossing rate following the implementation of the spiral-marking roundabouts. The confounding effects of possible factors, including circulating lane width, entry and exit width, entry and exit curvature, entry angle, time period, and roundabout flow were taken into account in the multiple regression model. Nonetheless, there were marginal decreases in potential conflicts, with no significant reduction in crash frequency at the spiral-marking roundabouts.
Persistent Identifierhttp://hdl.handle.net/10722/174115
ISSN
2015 Impact Factor: 0.801
2015 SCImago Journal Rankings: 0.627
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWong, SCen_US
dc.contributor.authorSze, NNen_US
dc.contributor.authorLoo, BPYen_US
dc.contributor.authorChow, ASYen_US
dc.contributor.authorLo, HKen_US
dc.contributor.authorHung, WTen_US
dc.date.accessioned2012-11-16T03:34:53Z-
dc.date.available2012-11-16T03:34:53Z-
dc.date.issued2012en_US
dc.identifier.citationJournal of Transportation Engineering, 2012, v. 138 n. 11, p. 1377-1387en_US
dc.identifier.issn0733-947X-
dc.identifier.urihttp://hdl.handle.net/10722/174115-
dc.description.abstractThe Hong Kong Transport Department initiated a trial of the spiral-marking system on four roundabouts in different phases between January 2004 and August 2008. In this study, observational and questionnaire surveys were conducted to assess how the proposed roundabout marking system affected driver behavior, level of service, and safety performance. The vehicle travel time, number of conflicts, crash incidence, and weaving movements were assessed before and after the implementation in the observation surveys, and the perceived safety, congestion level, and lane-changing difficulties were assessed through questionnaire surveys, respectively. Generally, drivers preferred the spiral-marking roundabout to conventional roundabouts, especially after trialing the new marking system. Inexperienced drivers, in particular, appreciated the spiral-marking system because of the increased safety level, reduced congestion level, and increased ease of navigation. On the other hand, the results of the observational survey indicated that there was no unfavorable change in the average approach lane choice, circulating time, and lane-crossing rate following the implementation of the spiral-marking roundabouts. The confounding effects of possible factors, including circulating lane width, entry and exit width, entry and exit curvature, entry angle, time period, and roundabout flow were taken into account in the multiple regression model. Nonetheless, there were marginal decreases in potential conflicts, with no significant reduction in crash frequency at the spiral-marking roundabouts.-
dc.languageengen_US
dc.publisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/te.html-
dc.relation.ispartofJournal of Transportation Engineeringen_US
dc.rightsJournal of Transportation Engineering. Copyright © American Society of Civil Engineers.-
dc.subjectIntersections-
dc.subjectDriver behavior-
dc.subjectTraffic surveys-
dc.subjectTraffic management-
dc.subjectTraffic safety-
dc.titlePerformance evaluations of the spiral-marking roundabouts in Hong Kongen_US
dc.typeArticleen_US
dc.identifier.emailWong, SC: hhecwsc@hku.hken_US
dc.identifier.emailSze, NN: nnsze@graduate.hku.hken_US
dc.identifier.emailLoo, BPY: bpyloo@hku.hken_US
dc.identifier.emailChow, ASY: asychow@ied.edu.hk-
dc.identifier.emailLo, HK: cehklo@ust.hk-
dc.identifier.emailHung, WT: cewthung@polyu.edu.hk-
dc.identifier.authorityWong, SC=rp00191en_US
dc.identifier.authorityLoo, BPY=rp00608en_US
dc.identifier.doi10.1061/(ASCE)TE.1943-5436.0000433-
dc.identifier.hkuros212307en_US
dc.identifier.volume138en_US
dc.identifier.issue11-
dc.identifier.spage1377en_US
dc.identifier.epage1387en_US
dc.identifier.isiWOS:000312769000012-
dc.publisher.placeUnited States-

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