Long Green Times and Cycles at Congested Traffic Signals
Field data were collected and simulation experiments based on traffic at an intersection in Virginia were conducted to test the hypothesis that headways increase with long green times and to test the common assumption that throughput increases with longer cycles. The results showed that headways increased with long green times as a result of departing turning vehicles and that this effect could cause a significant increase in overall average approach headways. The results also showed that maximum throughput, defined as the point where additional offered load could not be served, did not increase with longer cycles. With values derived from the field data, increasing the cycle did not increase throughput. In simulation, increasing the cycle caused a reduction in throughput as a result of increasing the effect of departing turning traffic on the average headway.
- Record URL:
- Summary URL:
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309142601
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Authors:
- Denney Jr, Richard W
- Curtis, Eddie
- Head, Larry
- Publication Date: 2009
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 1-10
- Monograph Title: Traffic Signal Systems 2009
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Serial:
- Transportation Research Record: Journal of the Transportation Research Board
- Issue Number: 2128
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Field studies; Green interval (Traffic signal cycle); Headways; Traffic congestion; Traffic signal cycle; Traffic simulation; Turning traffic
- Uncontrolled Terms: Field data; Throughput (Traffic)
- Geographic Terms: Virginia
- Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;
Filing Info
- Accession Number: 01126598
- Record Type: Publication
- ISBN: 9780309142601
- Report/Paper Numbers: 09-2273
- Files: TRIS, TRB, ATRI
- Created Date: Apr 17 2009 9:56AM