01044897

Component

https://doi.org/10.3141/2035-14

http://scholar.google.com...acek&publication_year=2007

The results are presented from an empirical study on the distribution of dilemma zones for different groups of drivers at signalized intersections. With a specially designed video-based system, this study conducted extensive field observations of the responses of 1,123 drivers to a yellow phase at six intersections with high accident frequency, including all critical data such as the speed evolution during the yellow phase, the acceleration and deceleration rates, and the approximate reaction time to an encountered yellow phase. These empirical results revealed that the dilemma zone is dynamic in nature, with its location varying with the driving population, and that the recommended and commonly used practice of extending the yellow phase duration may not eliminate all the dilemma zones. Two types of strategies that can effectively eliminate the dynamic dilemma zones are also designed to improve intersection safety.

01091263

English

pp 122-133

2007

Transportation Research Record: Journal of the Transportation Research Board

9780309104623

Print

Figures (8) ; References (15) ; Tables (7)

Data collection; Dilemma zone; Drivers; High risk locations; Reaction time; Signalized intersections; Speed; Traffic safety; Video cameras; Yellow interval (Traffic signal cycle)

Acceleration rates; Deceleration rates

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, ATRI

Feb 8 2007 6:19PM

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