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FHWA Home / Safety / Roadway Departure / Safety Eligibility Letter

Safety Eligibility Letter WZ - 317

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U.S. Department of Transportation
Federal Highway Administration
400 Seventh St., S.W.
Washington, D.C. 20590

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May 24, 2012

In Reply Refer To: HSST/WZ-317

Kenneth Parrott
Impact Recovery Systems, Inc.
4955 Stout Dr.
San Antonio, Texas  78219

Dear Ms. Bleau:

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: Tuff Curb© XLP
Type of system:

Channelizing curb system

Test Level:

MASH Test Level 3

Testing conducted by: Texas Transportation Institute
Date of request: July 15, 2011

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

Based on a review of crash test results submitted by the manufacturer certifying the device described herein meets the crash test and evaluation criteria of the American Association of State Highway and Transportation Officials’ Manual for Assessing Safety Hardware (MASH), 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 American Association of State Highway and Transportation Officials' Manual for Assessing Safety Hardware (MASH).  

Description
Tuff Curb® XLP is a longitudinal channelizing curb system produced by Impact Recovery Systems, Inc.  Tuff Curb® XLP consists of two pieces.  One is a single piece curb section measuring 40 inches long x 8 inches wide x 2 inches high made of High Density Polyethylene and weighing approximately seven pounds.  It is attached to the roadway by way of lag bolts through two or three anchor holes within the curb or with highway grade adhesives.  The second piece is an optional coupler which bridges between curb sections, measuring 10 inches long x 8 inches wide x 1.75 inches high also made of High Density Polyethylene and weighing approximately 2 pounds.  It is attached to the roadway by way of two holes which are co-aligned with adjoining curb sections and anchors by way of the same lag bolt, or through adhesives.  It should be noted that all tests were conducted with vertical road tubes in place.
Subsequent to MASH testing of the curb system on January 19, 2011 at Texas Transportation Institute, twenty two (22) additional tests were performed on January 27, 2011, also at Texas Transportation institute using two anchor configurations, three anchor configurations, and epoxy and Super Bundy adhesives:

  1. Traversal of Curb at 25° - Pass – Vehicle stable and no compartment penetration or deformation
  2. Traversal of Curb at 0° - Pass – Vehicle stable and no compartment penetration or deformation

Summary and Standard Provisions                                                           
Therefore, the system described above 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:


 

Sincerely yours,

 

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

Enclosures

Page last modified on June 24, 2011.
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Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000