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                Safety Eligibility Letter WZ-249
  
  **Hardware Type:**
            Work Zone Devices
                          **Code:**
            WZ-249
                          **Date:**
            02/28/2007
                          **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            Bone Safety Signs
                          **Device Description:**
            3mm and 4mm Bone Light aluminum laminate sign substrate
                          **View PDF:**
            wz249.pdf (399.24 KB)
    
    
Skip to contentSkip to contentUnited States Department of Transportation - Federal Highway AdministrationDOT logo
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:
Our acceptance is limited to the crashworthiness  characteristics of the devices and does not cover their structural features,  nor conformity with the Manual on Uniform Traffic Control Devices.
Any changes that may adversely influence the  crashworthiness of the device will require a new acceptance letter.

Should the FHWA discover that the qualification testing  was flawed, that in-serviceperformance reveals unacceptable  safety problems, or that the device being marketed is significantly different  from the version that was crash tested, it reserves the right to modify or  revoke its acceptance.

You will be expected to supply potential users with  sufficient information on design and installation requirements to ensure proper  performance.
You will be expected to certify to potential users that  the hardware furnished has essentially the same chemistry,  mechanical properties, and geometry as that submitted for acceptance, and that  they will meet the crashworthiness requirements of the FHWA and the NCHRP  Report 350.

To prevent misunderstanding by others, this letter of  acceptance, designated as number WZ-249, shall not be reproduced except in  full. This letter, and the test  documentation upon which this letter is based, is public information. All such letters and documentation may be  reviewed at our office upon request.
This acceptance letter shall not  be construed as authorization or consent by the FHWA to use, manufacture, or  sell any patented device for which the applicant is not the patent holder. The acceptance letter is limited to the  crashworthiness characteristics of the candidate device, and the FHWA is  neither prepared nor required to become involved in issues concerning patent  law. Patent issues, if any, are to be  resolved by the applicant.Sincerely yours,
**/original signed by /**
John R. Baxter, P.E.
Director, Office of Safety Design
Office of Safety

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