TY - GEN
T1 - Impact of flaggers on safety and mobility of highway work zones
AU - Ahmed, Abdelmohsen
AU - Khaled, El Rayes
AU - Liang, Liu
N1 - Publisher Copyright:
© 2017Canadian Society for Civil Engineering. All rights reserved.
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:85053610723
SN - 9781510865358
T3 - Proceedings, Annual Conference - Canadian Society for Civil Engineering
SP - 264
EP - 271
BT - Canadian Society for Civil Engineering Annual Conference and General Meeting 2017
PB - Canadian Society for Civil Engineering
T2 - Canadian Society for Civil Engineering Annual Conference and General Meeting 2017: Leadership in Sustainable Infrastructure
Y2 - 31 May 2017 through 3 June 2017
ER -