Resource Type: Manuals, Policies, Guidelines, and Handbooks, etc.
This guideline covers various types of positive protection devices that can be easily placed and moved for short duration and short term work operations, especially compared with traditional portable …MoreBarriers
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2009 National Traffic Management & Work Zone Safety Conference
The acclaimed Traffic Management & Work Zone Safety Conference managed by the ARTBA - Transportation Development Foundation was held March 9-13 in Orlando, Florida, in conjunction with World o… More
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices (Practice)
Michigan DOT's current practice is to delineate the temporary concrete barrier (TCB) with barrier markers placed at 6m max spacing at a height of 460 + 25mm from the bottom of the barrier marker to th… More
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices (Practice)
New York state standard specifications require delineation on temporary barrier as follows: "The contractor shall provide and maintain delineation on the temporary barriers. This delineation shall mak… More
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices (Practice)
Standard 701321-02 shows Illinois' basic object marker barrier wall attachment. Most designers are now opting for the Detail A option using barrier wall reflectors. This marker attachment design has n… More
Salvaged and/or re-galvanized guardrail on construction projects (Practice)
Florida allows the use of salvaged and/or re-galvanized guardrail in lieu of new guardrail.
Under what circumstances will the state agency authorize its use? - FDOT Design Standards allow the use of … More
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices (Practice)
West Virginia uses "B-1" delineators every 20' mounted along the face (about 3/4 up). They can mount on top as an alternate, and various sizes are permitted. All delineators are attached by PVC compou… More
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices (Practice)
Wisconsin has typically not used top-mounted object markers on portable concrete barrier. The normal practice is to use only side-mounted delineator reflectors at 20-foot spacing. On curved alignment … More
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices (Practice)
Alabama requires a small, flexible plastic substrate marker mounted on the top of concrete barrier in construction work zones. These plastic markers are covered with silver Type III reflective sheet… More
Cutting off corners of diamond-shaped signs when mounted on a barrier wall (Practice)
Kentucky Transportation Cabinet has cut the corners of signs mounted on barrier walls in a few situations over the years. This practice was certainly not desirable, but necessary in order to dual-moun… More
Temporary Movable (“Zipper”) Barrier systems in work zones (Practice)
Michigan has used the movable barrier wall on 4 or 5 projects in work zones. The state has used these on freeways where traffic is switched from one side of the road to the other. The zipper wall is… More
Design criteria for narrow-base, single-face barrier used on bridge decks in work zone staging applications (Practice)
The only narrow single-face barrier for work zones is the Iowa Stacked H-pile Barrier. This barrier is 14" wide and 28" tall. Basically the barrier is two H-piles stacked on top of each other with f… More
Portable Positive Protection: A Guide for Short Duration and Short Term Work Zones
September 2015
PDF Version [3.8 MB]
Developed by ATSSA for the FHWA Work Zone Safety Grant Program
Note: This document cites specific products solely to illustrate the concept of portable… More
Salvaged and/or re-galvanized guardrail on construction projects (Practice)
The Kentucky Department of Highways has an in-house recycling operation for used guardrail and guardrail posts. The used materials are obtained from removal of existing guardrail included in normal c… More
Salvaged and/or re-galvanized guardrail on construction projects (Practice)
MnDOT does on occasion salvage existing guardrail and reinstall it in lieu of installing new guardrail. However, MnDOT does not re-galvanize existing guardrail for reuse.
Under what circumstances w… More
Maintenance guidelines for cable barrier systems (Practice)
Indiana has two evaluation sections of the Brifen TL 4 system. The state is developing guidelines for where cable rail should be installed (based on median width and accident history). Current mainte… More
Salvaged and/or re-galvanized guardrail on construction projects (Practice)
Alabama allows the use of salvaged guardrail as indicated on plans for guardrail reset. -Under what circumstances will the state agency authorize its use? Guardrail to be salvaged will be indicated o… More
Portable Positive Protection: A Guide for Short Duration and Short Term Work Zones (Publication)
Resource Type: Manuals, Policies, Guidelines, and Handbooks, etc.
This guideline covers various types of positive protection devices that can be easily placed and moved for short duration and short term work operations, especially compared with traditional portable …MoreSalvaged and/or re-galvanized guardrail on construction projects (Practice)
Texas frequently uses salvaged guardrail. Any rail removed in the construction of a new highway is frequently stockpiled for use in maintenance operations. If it is damaged or rusted it is either gi… More
Temporary Movable (“Zipper”) Barrier systems in work zones (Practice)
WSDOT owns a couple of the movable barrier systems and has used them primarily on interstate freeway HOV widening projects over the past several years. They work well in adding an additional level of … More
Guidelines on the Use of Positive Protection in Temporary Traffic Control Zones
PDF Version [5.4 MB]
Developed by:
The American Traffic Safety Services Association
15 Riverside Parkway Suite 100
Fredericksburg, VA 22406-1022
800-272-8772
This material is based u… More
Louisiana Department of Transportation and Development Standard Plans (Publication)
Resource Type: Standard Plans
These documents comprise the Standard Plans for construction in the state of Louisiana. It includes drawings for box culverts, catch basins and manholes, cattle guard, concrete retaining wall, corruga…MoreSalvaged and/or re-galvanized guardrail on construction projects (Practice)
Montana currently permits reusing removed rail from projects occasionally by special provision or change order.How does the state agency verify and certify that the salvaged and/or re-galvanized guard… More
New DOT Barriers Can Help Save Workers’ Lives (Publication)
Resource Type: News and Other Non-research Articles
There were more than 1,600 work-zone collisions in Washington State last year and an average of four crashes a day involving drivers crashing into Washington State Department of Transportation (WSDOT)…MoreSalvaged and/or re-galvanized guardrail on construction projects (Practice)
New Hampshire allows the use of salvaged and/or re-galvanized guardrail in lieu of new guardrail.
Under what circumstances will the state agency authorize its use? - Temporary guardrail.
How does th… More
Salvaged and/or re-galvanized guardrail on construction projects (Practice)
Oregon allows the use of salvaged guardrail to be reused on the same job it came off of.
Under what circumstances will the state agency authorize its use? - If it is still in good condition and const… More
Maintenance guidelines for cable barrier systems (Practice)
Texa DOT uses only proprietary high-tension cable median barrier. TxDOT follows manufacturer guidelines for maintenance and tensioning of the systems. See "SPECIAL SPECIFICATION 7224: Repair Cable Bar… More
Temporary Movable (“Zipper”) Barrier systems in work zones (Practice)
NCDOT uses movable barrier quite extensively in its work zones, mostly on interstate rehabilitation projects. The barrier system was used on I-95 to close one lane Monday thru Thursday and open it up … More