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# Safety Eligibility Letter WZ-334

**Hardware Type:**

**Code:**

**Date:**

06/17/2014

**Testing Criteria:**

**Manufacturer:**

**Device Description:**

**View PDF:**

wz334.pdf (751.58 KB)

## Safety Eligibility Letter WZ - 334

**Download Version**PDF

U.S. Department of Transportation**Federal Highway Administration**

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

June 17, 2014

In Reply Refer To: 	 HSST/WZ-334

Mr. Craig Schulz   Pexco, LLC Davidson Traffic Control Products    3110 70th Avenue East   Tacoma, Washington  98424

Dear Mr. Schulz:

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.

**Decision:**The following device is eligible, with details provided in the form which is attached as an integral part of this letter:
                      - Construction Grade IG Curb, with or without FG300 Channelizer Posts

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**The device and supporting documentation are described in the attached form. The original FG300 Curb System was the subject of FHWA Letter WZ-193, dated November 2, 2004. An amendment dated December 6, 2005, recognized a redesign of FG300 as a one-piece unit. You also substituted a material with higher durability plastic. The current letter, WZ-334, covers the one piece IG curb units with the original plastic formulation.

**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 FHW A eligibility letters:
                      - This  finding of eligibility does not cover other structural features of the systems, nor conformity with the  Manual on Uniform Traffic Control Devices.
                      - Any  changes that may influence system conformance with NCHRP Report 350 criteria  will require a new reimbursement eligibility letter.
                      - Should  the FHWA discover that the qualification testing was flawed, that in-service  performance reveals safety problems, or that the system is significantly different  from the version that was crash tested, we reserve the right to modify or  revoke this letter.
                      - You are  expected to supply potential users with sufficient information on design and  installation requirements to ensure proper performance.
                      - You are expected  to certify to potential users that the hardware furnished has the same  chemistry, mechanical properties, and geometry as that submitted for review,  and that it will meet the crash test and evaluation criteria of the  NCHRP Report 350.
                      - To prevent misunderstanding by others, this  letter of eligibility is designated as number WZ-334 and shall not be  reproduced except in full. This letter  and the test documentation upon which it is based are public information. All such letters and documentation may be  reviewed at our office upon request. 
                      - This letter shall not be construed as  authorization or consent by the FHWA to use, manufacture, or sell any patented  system for which the applicant is not the patent holder. 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. GriffithDirector, Office of Safety  TechnologiesOffice of Safety |
|--------|----------------------------------------------------------------------------------------------------------------------------------------|

Enclosures

## Request for Federal Aid Reimbursement Eligibility  	  Of Highway Safety Hardware

| Submitter    | **Date of Request:**                                              | January 21, 2014        | New   Resubmission |
|--------------|-------------------------------------------------------------------|-------------------------|------------------------------|
| **Name:**    | Craig Schulz                                                      | Signature: Craig Schulz |
| **Company:** | Pexco, LLC. – Davidson Traffic Control Products                   |
| **Address:** | 3110 70th Ave East, Tacoma, WA 98424                              |
| **Country:** | USA                                                               |
| **To:**      | Michael S. Griffith, Director FHWA, Office of Safety Technologies |

I request the following devices be considered eligible for reimbursement under the Federal-aid       highway program.
| System Type                                          | Submission Type                                              | Device Name/Variant                                                                  | Testing Criterion | Test Level |
|------------------------------------------------------|--------------------------------------------------------------|--------------------------------------------------------------------------------------|-------------------|------------|
| 'WZ': Crash Worthy Work Zone Traffic Control Devices |  Physical Crash Testing FEA & V&V Analysis | FG 300 Interstate Grade – Variation to be     "     Construction Interstate Grade"   | NCHRP Report 350  |       |

By submitting this request for review and evaluation by the Federal Highway Administration, I certifythat the product(s) was (were) tested in conformity with the NCHRP Report 350 (Report 350) and thatthe evaluation results meet the appropriate evaluation criteria in the Report 350.

Identification of the individual or organization responsible for the product:
| **Contact Name:** | Craig Schulz                                      | Same as Submitter ☒   |
|-------------------|---------------------------------------------------|-----------------------|
| **Company Name:** | Pexco, LLC. – Davidson Traffic Control Products   | Same as Submitter ☒   |
| **Address:**      | 3110 70th Ave East, Tacoma, WA 98424              | Same as Submitter ☒   |
| **Country:**      | USA                                               | Same as Submitter ☒   |

## PRODUCT DESCRIPTION

| Modification to Existing Hardware null                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| "Construction Grade" – IG Curb is simply a resin change from the current ASA which will remain in the "Interstate     Grade" curb, this offering will remain for long term projects/permanent applications. The reason for the     development/reintroduction of ABS in the "Construction Grade" IG curb is due to some of the market place     wants a 1 – 2 year product (non warrantied), as the benefits of Longitudinal Channelization are recognized and     being deployed on several short term projects (less than 2 years). This offers a highly durable product at a lower     price point allowing project budgets to be maximized rather than restricted

       The ABS has been tested and proven as it was originally the material in the "Standard Curb" WZ-193 was       originated on. The physical properties of the two resin are very similar initially. The ASA has better long term       beyond 2 year performance which was originally called for by the market

ABS has been the material of choice in our road bases for years, the 495 Beltway project outside of DC uses our       ASS bases and posts.     |

 

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## CRASH TESTING

A brief description of each crash test and its result:
| Required Test Number | Narrative Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Evaluation Results |
|----------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------|
| Til 2004 Bunzl       | This was the originating test that all other longitudinal channelizing     devices have been based on. It was a live driver test at Texas     Transportation Institute in 2004. It was a four part test:
- Traversal of Curb at 20 degrees – 64.8 mph impact speed,       drivers path was maintained in a straight-ahead position, slight        dimpling of the hood.
- Traversal of Curb at 0 degrees – 61.4 mph impact speed, drivers        path was maintained in a straight-ahead position. No damage or        vaulting.
- Lane Change Maneuver – 60.8 mph impact speed, driver        influence was only the change of direction to make the lane         change. No damage or vaulting.
- Traversal of Vat 0 degrees – 63.3 mph impact speed, drivers        path was maintained in straight ahead position with minimum effort. 

Conclusion:       The results of the tests on the Davidson Traffic Control Products        FG300 Curb System showed no tendency for the curb to cause the  driver to lose control of the vehicle. In addition, no movement of        the curb, which could lead to separation from the road surface, was        noted.         | PASS               |

Full Scale Crash Testing was done in compliance with Report 350 by the following accredited crash testlaboratory (cite the laboratory's accreditation status as noted in the crash test reports.)
| **Laboratory Name:** | Texas Transportation Institute       |
|----------------------|--------------------------------------|
| **Laboratory Name:** | Dean Albertsen                       | Same as Submitter □ |
| **Address:**         | 3110 70th Ave East, Tacoma, WA 98424 | Same as Submitter □ |
| **Country:**         | USA                                  | Same as Submitter □ |

## ATTACHMENTS

Attach to this form:      1) A copy of the full test report, video, and a Test Data Summary Sheet for each t est conducted in      support of this request.      2) A drawing or drawings of the device(s) that conform to the Task Force-13 Drawing Specifications      [*Hardware Guide Drawing Standards*]. For proprietary products, a single isometric line drawing is      usually acceptable to illustrate the product, with detailed specifications, intended use, and contact      information provided on the reverse. Additional drawings (not in TF-13 format) showing details that      are key to understanding the performance of the device should also be submitted to facilitate our review.

**FHWA Official Business Only**:
| Eligibility Letter | AASHTOTF13    |   |
|--------------------|---------------|--------|
||
| WZ-334             | June 10, 2014 | N/A    | Longitudinal Channelizer      Curb Unit |

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