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Washington, DC 20590
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FHWA Home / Safety / Roadway Departure / Safety Eligibility Letter

Safety Eligibility Letter WZ - 289

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U.S. Department of Transportation
Federal Highway Administration

1200 New Jersey Ave. S.E.
Washington, D.C. 20590

March 18, 2010

In Reply Refer To: HSSD/ WZ-289

Mr. Paul R. Grime
President
Panel Resource Group, Inc.
12206 Nithdale Court
Chesterfield, VA 23838

Dear Mr. Grime:

In your correspondence of August 11, 2009, you requested the Federal Highway Administration (FHWA) acceptance of Alcopla-Lite sign substrates up to 4mm thick. Accompanying your request were product specifications. You requested acceptance of Alcopla-Lite sign substrates 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.”

The material properties of the Alcopla-Lite substrates are nearly identical and considered equivalent to other previously accepted 2mm, 3mm, and 4mm light weight aluminum composite material to be used as sign substrates. Our records indicate that 2mm, 3mm, and 4mm aluminum composite material 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.

Mr. Matt Lupes of my office replied on August 18, 2009, with a letter stating that Alcopla-Lite sign substrates were essentially equivalent to other aluminum laminate substrates found acceptable by FHWA and were likewise acceptable for use. On March 12, 2010, you requested a formal numbered FHWA Acceptance Letter documenting this action.

As the FHWA already accepts the use of lightweight aluminum composite material as sign substrates, we will also consider Alcopla-Lite sign substrates with thicknesses up to and including 4mm, 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 FHWA letters of acceptance:

 

Sincerely yours,

/* Signature of David A. Nicol */

David A. Nicol, P.E.
Director, Office of Safety Design
Office of Safety

Enclosure

Page last modified on June 24, 2011.
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