Federal Highway Administration
400 Seventh St., S.W.
Washington, D.C. 20590
January 5, 2007
Refer to: HSA-10/WZ-197 #1
Mr. Jeffery M. Siadik
Vice President of Operations
Traffic Safety Service Corporation
601 Hadley Road
P.O. Box 615
South Plainfield, NJ 07080
Dear Mr. Siadik:
This letter is in response to your company's correspondence through email requesting the Federal Highway Administration (FHWA) acceptance of your Type III Breakaway plastic barricades as crashworthy traffic control devices for use in work zones on the National Highway System (NHS). You requested that we find these devices acceptable for use on the NHS under the provisions of National Cooperative Highway Research Program (NCHRP) Report 350 "Recommended Procedures for the Safety Performance Evaluation of Highway Features." The purpose of this letter is to modify the previous WZ-197 letter issued by the FHWA dated March 22, 2005.
You indicate that Traffic Safety Service Corporation is now manufacturing the framing elements for your Type III Breakaway plastic barricade and that it is essentially identical to the previously accepted barricade issued by WZ-197. The framing elements of your Type III barricade are virtually identical in plastic formulation, material thickness, and hardware. The frame utilizes blow molded high density polyethylene that is manufactured using the same processes as before. When completely assembled the weight of the modified barricade is indeed 20 pounds, including the 3/16 poly panels which weigh 2 pounds each. The only difference, as shown in the enclosed drawings, is that the frame of the modified Type III Breakaway barricade has an indent on either side to aid in stacking and transport of the units.
The FHWA agrees that the modified Type III Breakaway barricade is essentially identical to the previously accepted Type III barricade and that the small design difference will not affect its performance as a crashworthy device. Please note that the original Type III barricade was
crash-tested with three rails on one side only and without lights. This acceptance is limited to the previously accepted crash test conditions.
Your modification to the successfully tested barricade only affects the barricade frame. Provided the rails are connected to the barricade frame in substantially the same manner as the tested barricade was assembled, your Type III Breakaway barricade described above and shown in the enclosed drawing for reference will be acceptable for use on the NHS under the range of conditions the original barricade was tested, when proposed by a State.
Please note the following standard provisions that apply to the FHWA letters of acceptance:
/Original Signed by/
John R. Baxter, P.E.
Director, Office of Safety Design
Office of Safety
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