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Page 49
Suggested Citation:"Abbreviations/Acronyms." National Academies of Sciences, Engineering, and Medicine. 2019. Very Short Duration Work Zone Safety for Maintenance and Other Activities. Washington, DC: The National Academies Press. doi: 10.17226/25512.
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Page 49
Page 50
Suggested Citation:"Abbreviations/Acronyms." National Academies of Sciences, Engineering, and Medicine. 2019. Very Short Duration Work Zone Safety for Maintenance and Other Activities. Washington, DC: The National Academies Press. doi: 10.17226/25512.
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Page 50

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49 AASHTO American Association of State Highway and Transportation Officials ADT average daily traffic AHMCT Advanced Highway Maintenance & Construction Technology ARDVAC Automated Road Debris Vacuum Caltrans California Department of Transportation CDOT Colorado Department of Transportation CHP California Highway Patrol DOT Department of Transportation FDOT Florida Department of Transportation FHWA Federal Highway Administration IADOT Iowa Department of Transportation IDOT Illinois Department of Transportation ITD Idaho Transportation Department JAWS Julie’s Automated Waste-Removal System KDOT Kansas Department of Transportation KTC Kentucky Transportation Cabinet LADOTD Louisiana Department of Transportation and Development MassDOT Massachusetts Department of Transportation MDOT Mississippi Department of Transportation MnDOT Minnesota Department of Transportation MoDOT Missouri Department of Transportation MUTCD Manual on Uniform Traffic Control Devices NCDOT North Carolina Department of Transportation NCHRP National Cooperative Highway Research Program NYSDOT New York State Department of Transportation ODOT Ohio Department of Transportation OTM Ontario Traffic Manual RPM raised pavement marker SCDOT South Carolina Department of Transportation SCOM Standing Committee on Maintenance TA typical application TL typical layout TMA truck-mounted attenuator TTC temporary traffic control TxDOT Texas Department of Transportation UAV unmanned aerial vehicle Abbreviations/Acronyms

50 Very Short Duration Work Zone Safety for Maintenance and Other Activities VSD very short duration VSDO very short duration operation VSDWZ very short duration work zone VDOT Virginia Department of Transportation WSDOT Washington State Department of Transportation WyDOT Wyoming Department of Transportation

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TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 533 identifies the current state of practice among state departments of transportation (DOTs) regarding selection and setup of very short duration work zone (VSDWZ).

The report presents case examples of four state DOTs along with an in-depth analysis of the VSDWZ policies of these states. The case example agencies have developed specific guidance on the topic for their jurisdictions.

VSDWZ activities are those activities not defined in the Manual on Uniform Traffic Control Devices (MUTCD) under short duration work zone or temporary traffic control (TTC) zones. These activities are usually 1 to 20 minutes long and include maintenance activities (e.g., performing temporary patching, picking up debris, or placing traffic count tubes) where TTC is not set up.

VSDWZ activities reduce the exposure of workers to risk and the inconvenience to traffic that standard TTC zones would create. Current policies and practices in place at various agencies for VSDWZ activities vary substantially. The work-zone setup also varies by the type of maintenance or other very short duration activity and roadway classification (e.g., speed, AADT, and number of lanes). Historically, during those activities, a large number of worker fatalities have occurred.

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