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FHWA Home / Safety / Roadway Departure / Eligibility Letter SS-126B

Safety Eligibility Letter SS-126B

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U.S. Department of Transportation
Federal Highway Administration

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

May 6, 2014

In Reply Refer To:
HSST/SS-126B

Mr. Bret Eckert
Trinity Highway Products
3617 Cincinnati Avenue
Rocklin, California 95765

Dear Mr.Eckert:

This letter is in response to your request for the Federal Highway Administration (FHWA) to review a roadside safety system for eligibility for reimbursement under the Federal-aid highway program.

Name of system: Perforated Square Steel Tube Sign Supports
Type of system: Generic Breakaway Sign Supports
Test Level: NCHRP Report 350 Test Level 3
Testing conducted by: Texas A&M Transportation Institute
Task Force 13 Designator PTP12a, PTP20a-24b
Date of request: November 15, 2013

Decision
The following device is eligible, with details provided in the form which is attached as an integral part of this letter:

Based on a review of crash test results certifying the device described herein meets the crash test and evaluation criteria of the National Cooperative Highway Research Program (NCHRP) Report 350, the device is eligible for reimbursement under the Federal-aid highway program.  Eligibility for reimbursement under the Federal-aid highway program does not establish approval or endorsement by the FHWA for any particular purpose or use. 

The FHWA, the Department of Transportation, and the United States Government do not endorse products or services and the issuance of a reimbursement eligibility letter is not an endorsement of any product or service.

Requirements
To be found eligible for Federal-aid funding, roadside safety devices should meet the crash test and evaluation criteria contained in the NCHRP Report 350 or the American Association of State Highway and Transportation Officials’ Manual for Assessing Safety Hardware (MASH).

Description
This letter modifies SS-126(Revised) by removing the ASTM A653 mechanical requirement that the ultimate tensile strength of the steel coil used to produce the perforated square steel tube should not exceed 550 MPa (79,800 psi) or have an elongation measured over 50mm (2 inches) greater than 28%. The crash test laboratory concurs in this change. The device and supporting documentation are described in the attached form.

Summary and Standard Provisions
Therefore, the system described and detailed in the attached form is eligible for reimbursement and may be installed under the range of conditions tested.

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

The FHWA does not become involved in issues concerning patent law. Patent issues, if any, are to be resolved by the applicant.

 

Sincerely yours,

Signature of Michael S. Griffith

Michael S. Griffith
Director, Office of Safety Technologies
Office of Safety

Enclosures

Page last modified on May 25, 2016
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Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000