SUPPLEMENTAL DEVICES TO ENHANCE FLAGGER SAFETY
Improper flagging techniques and driver misunderstanding of flagger messages can compromise the effectiveness and safety of a flagger. Supplemental devices may be necessary to complement the standard traffic control and flagging techniques outlined in the Manual on Uniform Traffic Control Devices (MUTCD) to ensure that drivers understand what actions are expected of them at work zones controlled by flaggers. The Texas Transportation Institute recently evaluated a reusable, temporary stop bar and a freestanding, oversized Stop/Slow sign paddle at lane closures on two-lane, two-way highways where flaggers were used to alternate one-way traffic. Operational data on distances from the flagger at which vehicles stopped, speeds through the work zone, and approach speeds were analyzed. The data showed that the temprary stop bar and oversized paddle were useful in helping drivers decide when and where to stop in front of the flagger. However, the stop bar and sign paddle had no significant effect on reducing approach speeds or speeds through the work zone. The flaggers who actually used the supplemental devices commented that the oversized Stop/Slow paddle helped drivers respond to their commands better and that the temporary stop bar helped identify a point at which drivers were to stop.
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Availability:
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Supplemental Notes:
- Publication of this paper sponsored by Committee on Traffic Safety in Maintenance and Construction Operations. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Booker, Scott C
- Ullman, Gerald L
- Levine, Steven Z
- Publication Date: 1987
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 34-37
- Monograph Title: Hazardous materials - transportation, work zone traffic control, and traffic marking materials
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Serial:
- Transportation Research Record
- Issue Number: 1148
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Approach; Data analysis; Data collection; Drivers; Flaggers; Mathematical analysis; Measures of effectiveness; Safety; Speed; Stopping distances; Traffic speed; Work zone traffic control
- Uncontrolled Terms: Effectiveness
- Old TRIS Terms: Approach speed; Stop slow sign paddle; Temporary stop bar
- Subject Areas: Highways; Maintenance and Preservation; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control;
Filing Info
- Accession Number: 00475939
- Record Type: Publication
- ISBN: 0309046572
- Files: TRIS, TRB, ATRI
- Created Date: Sep 30 1988 12:00AM