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U.S. Department of Transportation

Federal Highway Administration

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

May 9, 2006

Refer to: HSA-10/WZ-239

Mr. Doug Yetzer
Quality Restoration Services, Inc.
3066 Spruce Street
Little Canada, Minnesota 55117

Dear Mr. Yetzer :

Thank you for your February 15 letter requesting Federal Highway Administration (FHWA) acceptance of your company's QRS Vertical Sign Stand as a crashworthy traffic control device for use in work zones on the National Highway System (NHS). Accompanying your letter was the FHWA Office of Safety Design form completed and signed by you and E-Tech Testing Services, and a DVD compilation of relevant crash tests conducted by E-Tech. You requested that we find this stand acceptable for use on the NHS under the provisions of National Cooperative Highway Research Program Report 350 ";Recommended Procedures for the Safety Performance Evaluation of Highway Features."

This letter is the acknowledgement of the FHWA's acceptance of your request. The results of the testing met the FHWA requirements and, therefore, the device described in the form and detailed in the enclosed drawings is acceptable for use on the NHS under the range of conditions tested, when proposed by a State. The form, of which a copy is enclosed for reference, will be posted on our website in the near future.

You also asked for the following practical field-use scenarios:

  1. Use with or without flasher: Accepted
  2. Use with fewer or lighter sandbags than used in the crash test: Accepted
  3. Use without the four channel brackets: Denied – the sign mounted on the QRZ Vertical Sign Stand damaged the windshield even though the sign remained securely attached to the stand. Acceptable performance may not result if a less secure attachment method is used.
  4. Use without plating/finishing of components: Accepted
  5. Use with four-point sign attachment bolt patterns other than the 25" x 30" (VxH) patternused in the test: Accepted
  6. Use with a 36"x 36"x 0.100" solid aluminum sign mounted such that the center of gravity of the sign matches that of the tested 48" x 48" sign: Accepted

Thank you for working with us as we institute this new review and acceptance process.

Sincerely yours,

/Original Signed by/
John R. Baxter, P.E.
Director, Office of Safety Design
Office of Safety


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