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Abstract

This paper presents a systematic investigation into the effects of adverse weather on signal operation and the potential benefits of implementing weather-responsive signal control. The investigation considered isolated and coordinated signalized intersections in urban and suburban areas under various traffic conditions. Both operational and safety analyses were conducted in this investigation. Traffic signal optimization and microscopic traffic simulation were used to perform the operational analysis with average travel time as a performance measure. The safety analysis used the adequacy of change and clearance intervals and the presence of dilemma zones as indicators of safety at signalized intersections. Study results suggest that operational benefits of weather-responsive signal control are generally significant and that the greatest benefits can be realized at coordinated corridors in town and city centers. Results also suggest that dilemma zones are most likely introduced on a particular intersection approach once the coefficient of friction between tire and pavement drops below the design value of a wet pavement. Further, a set of recommended guidelines that relate weather conditions to operational impacts and potential benefits of weather-responsive signal timing was developed and provided in this study.

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References

Agbolosu-Amison

S. J.

, Sadek

A. W.

, and El-Dessouki

. Inclement Weather and Traffic Flow at Signalized Intersections: Case Study from Northern New England. In Transportation Research Record: Journal of the Transportation Research Board, No. 1867, Transportation Research Board of the National Academies, Washington, D.C., 2004, pp. 163–171.

Maki

Adverse Weather Traffic Signal Timing. Prepared for the Minnesota Department of Transportation by Short Elliott Hendrickson, Inc., 1999. trafficware.infopop.cc/downloads/00005.pdf.

Perrin

H. J.

, Martin

P. T.

, and Hansen

B. G.

. Modifying Signal Timing During Inclement Weather. In Transportation Research Record: Journal of the Transportation Research Board, No. 1748, TRB, National Research Council, Washington, D.C., 2001, pp. 66–71.

Martin

, Perrin

, and Quintana

. Inclement Weather Signal Timings. Traffic Lab, University of Utah, Salt Lake City, 2000. www.ndsu.nodak.edu/ndsu/uqpti/MPC_Pubs/html/MPC01-120/index.html.

Ibrahim

, and Hall

. Effect of Adverse Weather Conditions on Speed-Flow-Occupancy Relationships. In Transportation Research Record 1457, TRB, National Research Council, Washington, D.C., 1994, pp. 184–191.

Stern

, Shah

, and Goodwin

. Analysis of Weather Impacts on Traffic Flow in Metropolitan Washington, D.C. Presented at the American Meteorology Society Annual Meeting, Orlando, Fla., Jan. 13–17, 2002.

Lieu

H. C.

, and Lin

S.-M.

. Benefit Assessment of Implementing Weather-Specific Signal Timing Plans by Using CORSIM. In Transportation Research Record: Journal of the Transportation Research Board, No. 1867, Transportation Research Board of the National Academies, Washington, D.C., 2004, pp. 202–209.

Tyner

More Than Skid Marks: An Engineer's View. Prepared for the Canadian Institute Conference: Motor Vehicle Personal Injury and Property Claims, Halifax, Nova Scotia, Canada, Nov. 1995. crtynerassociates. ns.ca/docs/paper1.htm. Accessed July 2005.

A Policy on Geometric Design of Highways and Streets, 4th ed. AASHTO, Washington, D.C., 2001.

10.

Economic Impact of Highway Snow and Ice Control. Final Report. FHWA-RD-77-95. FHWA, U.S. Department of Transportation, 1977.

Weather-Responsive Signal Timing

Abstract

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