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FHWA Home / Safety / Roadway Departure / Safety Eligibility Letter WZ-127amend1

Safety Eligibility Letter WZ-127amend1

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U.S. Department of Transportation
Federal Highway Administration

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

December 23, 2009

In Reply Refer To:
HSSD WZ-22/ WZ-106/
WZ-106A/ WZ-107/
WZ-127/ WZ-127#1

Mr. Leo Yodock
President
The Yodock Wall Company
P.O. Box 354
Bloomsburg, PA 17815

Dear Mr. Yodock:

In your letter of August 4, you requested the Federal Highway Administration (FHWA) acceptance of your modified longitudinal channelizing device, the 2001M or Metropolitan, for use as a crashworthy traffic control device in work zones on the National Highway System (NHS). The modified 2001M is now made of blow molded high-density polyethylene.

The modified 2001M or Metropolitan is intended for use as detailed in previous FHWA acceptance letters and considered equivalent to the original 2001M device.

The original 2001M device was performance tested and FHWA acceptance letters WZ 22, 106, 106A, 107, and 127 have since been issued.

Accompanying your letter was the FHWA Office of Safety Design forms, a drawing of the modified 2001M and a copy of a test report that documented static testing conducted on your modified device to verify connection strength between units linked together and to compare the results to the previously accepted 2001M device. The results of testing indicated that the connection strength did not exceed that of the original 2001M.

You have requested that we find this device acceptable as meeting Test Level 3 criteria for use 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 is to acknowledge the FHWA's acceptance of the modified device and your request.

Longitudinal channelizers should not be described as "barriers" because they do not meet crashworthiness requirements for redirection. The FHWA recommendations for labeling each unit or module to indicate limitations of use are enclosed. 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.

 

Sincerely yours,

Signature of David A. Nicol

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

Enclosures

Page last modified on June 8, 2016
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