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Title: Would Tight Speed Limits Improve Travel Time Reliability? Case Study of Dutch Freeways
Accession Number: 01137491
Record Type: Component
Availability: Transportation Research Board Business Office 500 Fifth Street, NW Abstract: Over the last two decades travel time reliability has become an important indicator of transportation system performance. In this paper we investigate the effects of tight speed limits (towards lower values of speed limits) and speed enforcing on travel time reliability. An analysis of a large database of travel times on two Dutch freeway corridors reveals that travel time reliability is strongly affected by speed limits and enforcement, both positively and negatively. As can be expected, tight speed limits reduce travel time variability, particularly in free flow conditions. However, the analysis also shows that tight speed limits may significantly increase the probability of traffic breakdown. Since in our analysis travel time unreliability is caused by both travel time variability and breakdown probability, the net effect on travel time unreliability is strongly situation specific, ranging from a 20% increase to a 60% decrease.
Monograph Title: Monograph Accession #: 01120148
Report/Paper Numbers: 09-2589
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Tu, Huizhaovan Lint, Hansvan Zuylen, Henk JPagination: 12p
Publication Date: 2009
Conference:
Transportation Research Board 88th Annual Meeting
Location:
Washington DC, United States Media Type: DVD
Features: Figures
(8)
; References
(25)
; Tables
(1)
TRT Terms: Geographic Terms: Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control
Source Data: Transportation Research Board Annual Meeting 2009 Paper #09-2589
Files: BTRIS, TRIS, TRB
Created Date: Jan 30 2009 6:56PM
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