Assessing Longitudinal Arterial Performance and Traffic Signal Retiming Outcomes
Agencies often find it difficult to justify investments in active traffic management. Historically, it has been a challenge to obtain data that would help make the case for those investments. Although new data sources have emerged recently, there remains very little documentation of the potential long-term benefits from signal retiming using associated performance measures. This paper presents a use case for an active traffic management strategy on a signalized corridor over a 5-year period, during which traffic volumes increased by approximately 36% and offset optimization was performed every 2 to 3 years. Despite the considerable volume growth, the number of vehicles arriving on green increased by more than 41%, and the percentage of vehicles arriving on green increased by 10%, a gain of 6 percentage points. Furthermore, drivers experienced an average of 5% reduction in travel time and travel time reliability costs after each optimization. The retiming resulted in a 5-year net present value of approximately $3.7 million and a benefit–cost ratio of 52. Agencies can use these strategies to quantitatively assess how traffic performance and signal timing degrade over time, in a manner similar to physical infrastructure assets. The results highlight the benefits and associated business case of adopting a long-term active traffic management strategy that is based on data-driven performance monitoring and decision making.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309441315
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Authors:
- Lavrenz, Steven M
- Day, Christopher M
- Smith, W Benjamin
- Sturdevant, James R
- Bullock, Darcy M
- Publication Date: 2016
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 66–77
- Monograph Title: Traffic Signal Systems, Volume 2
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Serial:
- Transportation Research Record: Journal of the Transportation Research Board
- Issue Number: 2558
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Arterial highways; Highway traffic control; Longitudinal studies; Optimization; Performance measurement; Traffic signal timing
- Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; Public Transportation; Safety and Human Factors; I72: Traffic and Transport Planning; I73: Traffic Control;
Filing Info
- Accession Number: 01590108
- Record Type: Publication
- ISBN: 9780309441315
- Report/Paper Numbers: 16-0113
- Files: PRP, TRIS, TRB, ATRI
- Created Date: Feb 11 2016 3:38PM