Impact of flaggers on safety and mobility of highway work zones

Abdelmohsen Ahmed, Khaled A El-Rayes, Liang Y Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Standard specifications for road and bridge construction in many Departments of Transportation require that a flagger is utilized at all times to direct traffic in lane closure work zones on multilane highways. Utilizing flaggers as specified by these standards introduces inherent risks and varying effectiveness by positioning flaggers next to the live traffic. This paper presents the findings of a comprehensive study to assess the effectiveness and essential role of flaggers in directing work zone traffic on multilane highways and to consider alternative means of providing this function. The objectives of this study are to conduct a national survey of state DOTs to gather their feedback on the essential roles, effectiveness, and risks of utilizing flaggers to direct work zone traffic on multilane highways. A total of 100 responses were gathered in this national survey that asked respondents to identify the need, benefits, and risks of using flaggers in and around work zones. The main findings of this study on the roles and effectiveness of flaggers for directing work zone traffic control can be used to guide decision makers in changing and/or expanding existing standards and policies to improve work zone safety and mobility.

Original languageEnglish (US)
Title of host publicationCanadian Society for Civil Engineering Annual Conference and General Meeting 2017
Subtitle of host publicationLeadership in Sustainable Infrastructure
PublisherCanadian Society for Civil Engineering
Pages264-271
Number of pages8
Volume2017-May
ISBN (Print)9781510865358
StatePublished - Jan 1 2017
EventCanadian Society for Civil Engineering Annual Conference and General Meeting 2017: Leadership in Sustainable Infrastructure - Vancouver, Canada
Duration: May 31 2017Jun 3 2017

Other

OtherCanadian Society for Civil Engineering Annual Conference and General Meeting 2017: Leadership in Sustainable Infrastructure
CountryCanada
CityVancouver
Period5/31/176/3/17

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ahmed, A., El-Rayes, K. A., & Liu, L. Y. (2017). Impact of flaggers on safety and mobility of highway work zones. In Canadian Society for Civil Engineering Annual Conference and General Meeting 2017: Leadership in Sustainable Infrastructure (Vol. 2017-May, pp. 264-271). Canadian Society for Civil Engineering.