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Safety Acceptance Letter WZ-280Downloadable Version
PDF [169 KB]
1200 New Jersey Ave. S.E. In Reply Refer To: HSSD/WZ-280 Mr. John Reynolds Dear Mr. Reynolds: In your letter of April 10, 2009, you requested the Federal Highway Administration (FHWA) acceptance of the WZ Deluxe Tri-Pod temporary sign stand as a crashworthy traffic control device for use in work zones on the National Highway System (NHS). You requested acceptance of the temporary sign stand for use with the following sign substrate material: 1/2 inch thick plywood, 0.125 inch thick aluminum, 2 mm and 3 mm aluminum laminate, corrugated plastic, and roll-up material. Your request for acceptance is based on the performance of the generic tri-pod sign stand accepted in FHWA letters WZ-240 and a similar tri-pod stand in WZ-207. Accompanying your letter were the FHWA Office of Safety Design forms that included a drawing and a detailed description of the WZ Deluxe Tri-Pod. Drawings of the WZ Deluxe Tri-Pod are enclosed for reference. You requested that we find the WZ Deluxe Tri-Pod acceptable for use as a Test Level 3 device on the NHS under the provisions of the National Cooperative Highway Research Program Report 350 "Recommended Procedures for the Safety Performance Evaluation of Highway Features”. This letter acknowledges FHWA's acceptance of your request. The original completed forms have been modified by the addition of the FHWA acceptance letter number and the date of our review. The forms will be posted on our Web site in the near future.
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