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| Research article summary (published 30 Dec 2001): |
A study of stopping propensity at matured red light camera T-intersections.
Full Abstract
PROBLEM:
This paper evaluates the stopping propensity of drivers at matured in-service red light camera (RLC) signalized T-intersections after a number of years of camera operation.
METHOD:
A special-purpose data logger working in conjunction with loop sensors was used to gather traffic parameters, vehicle stopping/crossing movements, and signal phases at camera (treatment) and noncamera (comparison) approaches. Logistic modeling was employed to determine the stopping/crossing decisions of civilian vehicle drivers in response to the onset of yellow (amber) with traffic and the associated situational and behavioral variables, including their interactions.
SUMMARY:
The propensity to stop at camera approaches was about 17 times more than at noncamera approaches. This finding strongly affirmed the positive effect of RLC in encouraging drivers to stop. The likelihood to stop was about 6.5 times higher for an approach that faces an opposing right-turn conflict immediately after the onset of red. Higher stopping propensity was also more prevalent during weekdays and in periods of low traffic volumes.
IMPACT ON INDUSTRY:
The findings provided an objective measure on the effectiveness of RLC that would be useful to evaluate intersections for camera installation as well as on the implementation and operational aspects of RLC program.
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Author information
Author/s: Lum, K M (KM); Wong, Y D (YD);
Affiliation: Nanyang Technological University, Centre for Transportation Studies, Nanyang Avenue, Singapore 639798, Singapore. ckmlum@ntu.edu.sg
Journal and publication information
Publication Type: Journal Article
Journal: Journal of safety research (J Safety Res), published in United States. (Language: eng)
Reference: 2002-; vol 33 (issue 3) : pp 355-69
Dates: Created 2002/10/30; Completed 2002/11/15; Revised 2004/11/17;
PMID: 12404998, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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