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U.S. Department of Transportation

Federal Highway Administration

400 Seventh St., S.W.
Washington, D.C. 20590

February 28, 2007

Refer to: HSSD/WZ-249

Mr. Chris Goode
Vice President of Sales
Bone Safety Signs
2151 Northwest Parkway, SE - Suite 100
Marietta, GA 30067

Dear Mr. Goode :

Thank you for your November 6, 2006, correspondence requesting the Federal Highway Administration (FHWA) acceptance of your company's 3mm and 4mm thick Bone Light sign substrate. Accompanying your letter was a video recording of an informal crash test conducted. You requested acceptance of your Bone Light signs for use with accepted sign stands on the National Highway System (NHS) under the provisions of the National Cooperative Highway Research Program (NCHRP) Report 350 "Recommended Procedures for the Safety Performance Evaluation of Highway Features."

Upon request, you provided a sample of the Bone Light sign substrate to the FHWA and a copy of the product specifications. Your Bone Light sign substrate is a brand name of aluminum laminate material. The material properties of your 3mm and 4mm Bone Light substrate are identical and considered to be equivalent to other previously accepted 3mm and 4mm aluminum laminate sign substrates. Our records indicate that 3mm and 4mm aluminum laminate signs have been successfully crash tested on portable stands made by a number of manufacturers and are limited to use on the tested and accepted stands. Therefore, the FHWA accepts the use of your company's Bone Light 3mm and 4mm aluminum laminate sign substrates for use on the NHS under the range of conditions that equivalent materials have been tested and accepted, when proposed by a State.

Please note the following standard provisions that apply to the FHWA letters of acceptance:

Sincerely yours,

/original signed by /

John R. Baxter, P.E.
Director, Office of Safety Design
Office of Safety


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