Safety Eligibility Letter WZ-271
Hardware Type:
Work Zone Devices
Code:
WZ-271
Date:
Testing Criteria:
NCHRP 350
Manufacturer:
Three D Traffic Works
Device Description:
Ringtop Slim-Line Channelizer, and Universal Vertical Panel :TD 7500 and TD 6500
View PDF:
wz271.pdf (4.78 MB)
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Federal Highway Administration |
1200 New Jersey Ave. S.E. Washington, D.C. 20590 |
May 14, 2008
In Reply Refer To: HSSD/WZ-271
Mr. Frank Dvoracek
Three D Traffic Works, Inc.
430 N. Varney Street
Burbank, CA 91502
Dear Mr. Dvoracek:
In your letters of February 29 and April 10 you requested Federal Highway Administration (FHWA) acceptance of the TD 6500 Universal Vertical Panel and TD 7500 Ring-Top Slim-line Channelizer as crashworthy traffic control devices for use in work zones on the National Highway System (NHS). Accompanying your letters was the FHWA Office of Safety Design forms that included a drawing and a detailed description of the devices, a test report, and videos of the crash tests. The drawings are enclosed with the acceptance form for the TD 6500 Universal Vertical Panel and TD 7500 Ring-Top Slim-line Channelizer. You requested that we find these devices acceptable 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 the acknowledgement of the FHWA’s acceptance of your requests. The original completed forms have been modified by the addition of the FHWA acceptance letter number and the date of our review. The form will be posted on our Web site in the near future.
Sincerely yours,
David A. Nicol |
