Safety Eligibility Letter WZ-305
U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Ave. S.E.
Washington, D.C. 20590
October 21, 2011
In Reply Refer To:
Henry A. Ross
Director of Government Relations
7700 N. Austin Avenue
Skokie, Illinois 60077
Dear Mr. Ross:
This is in response to your September 1, 2010, letter requesting the Federal Highway
Administration's (FHWA) acceptance of your company's EconocadeTM Type I and Type II
Barricades with lightweight warning lights as crashworthy traffic control devices for use in work
zones and elsewhere on the National Highway System (NHS). Accompanying your letter was the
FHWA Office of Safety Design form indicating successful performance when tested under the AASHTO Manual for Assessing Safety Hardware (MASH) Test 3-71 (Modified.)
||Fibercade Type II Barricade
||Econocade Type I and
|Height, mm (in)#
||1075 (42 )#
|Height to top of light
|Mass (without light*)
||6.9 kg (15.2 lbs.)
||6.0 kg (13.2 lbs.)
|Mass, plus ballast
|Vehicle Speed, km/h
| Windshield Damage
You requested that we find the Econocade™ Barricades with lightweight warning lights
acceptable for use on the NHS under the provisions of the National Cooperative Highway
Research Report 350 and MASH based on its equivalence to your previously crash-tested
Plasticade™ barricade. The Plasticade was found acceptable in FHWA Acceptance Letter
WZ-14 dated May 28, 1999. As no additional crash testing was conducted under MASH criteria,
our acceptance will be limited to performance under NCHRP Report 350.
The Econocade™ Barricades described above and detailed in the enclosed drawing is equivalent
to the tested barricade as it is now molded as one piece and expected to perform in the same
manner as the tested barricade. Therefore, they are acceptable for use on the NHS under the test
conditions noted above, when such use is acceptable to a highway agency.
Please note the following standard provisions that apply to FHWA letters of acceptance:
- This acceptance is limited to the crashworthiness characteristics of the tested features and
does not cover their structural features, such as resistance to wind loads.
- Any design or material changes that may adversely influence the crashworthiness of the
barricades will require a new acceptance letter.
- Should the FHWA discover that the qualification testing was flawed, that in-service
performance reveals unacceptable safety problems, or that the system being marketed is
significantly different from the version that was crash tested, we reserve the right to
modify or revoke our acceptance.
- You will be expected to supply potential users with sufficient information on design and
installation requirements to ensure proper performance.
- You will be expected to certify to potential users that the hardware furnished has
essentially the same chemistry, mechanical properties, and geometry as that submitted for
acceptance, modified as noted above, and that it will meet the crashworthiness
requirements of the FHWA and the NCHRP Report 350.
- To prevent misunderstanding by others, this letter of acceptance is designated as number
WZ-305 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.
- The Plasticade products identified above are patented products and considered
proprietary. If proprietary systems are specified by a highway agency for use on Federalaid
projects, except exempt, non-NHS projects, (a) they must be supplied through
competitive bidding with equally suitable unpatented items; (b) the highway agency must
certify that they are essential for synchronization with the existing highway facilities or
that no equally suitable alternative exists; or (c) they must be used for research or for a
distinctive type of construction on relatively short sections of road for experimental
purposes. Our regulations concerning proprietary products are contained in Title 23,
Code of Federal Regulations, Section 635.411.
- This acceptance 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 acceptance letter is limited to the crashworthiness characteristics of the
candidate system, and the FHWA is neither prepared nor required to become involved in issues concerning patent law. Patent issues, if any, are to be resolved by the applicant.
Michael S. Griffith
Director, Office of Safety Technologies
Office of Safety