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Traffic signal warrants set the minimum conditions under which a traffic signal installation maybe appropriate. The four-hour volume signal warrant in the current Manual on Uniform TrafficControl Devices (MUTCD) (FHWA 2009) is applied based on a set of critical vehicular volumesfor different lane combinations of major and minor streets. This paper describes an effort to applymicroscopic simulation to evaluate the critical volumes used in the four-hour warrant. The resultsshow significant differences in average control delay for minor street traffic under different volumecombinations, lane configurations, turning volume percentages, heavy vehicle percentages, and thenumber of major street lanes (four versus six lanes), most of which are not currently consideredin the four-hour warrant. This finding provides some evidence of the need to possibly revise thecritical design values of the current four-hour volume warrant.

Subject(s): Public Economics

Issue Date: 2010

Publication Type: Journal Article

PURL Identifier: http://purl.umn.edu/207191 Published in: Journal of the Transportation Research Forum, Volume 49, Number 3 Page range: 7-19

Total Pages: 14

Record appears in: Transportation Research Forum > Journal of the Transportation Research Forum





Autor: Zhu, Xuesong ; Gan, Albert ; Shen, David

Fuente: http://ageconsearch.umn.edu/record/207191?ln=en







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