Safety Eligibility Letter WZ-180a
Hardware Type:
Work Zone Devices
Code:
WZ-180a
Date:
Testing Criteria:
NCHRP 350
Manufacturer:
Davidson Traffic Control Products
Davidson Traffic Control Products
Davidson Traffic Control Products
Device Description:
Modified the A-frame support in WZ-180 to an O-frame for type 1 and type 2 parade style barricade.
View PDF:
wz180a.pdf (849.17 KB)
  |
  |
Federal Highway Administration |
1200 New Jersey Ave. S.E. Washington, D.C. 20590 |
March 11, 2009
In Reply Refer To: HSSD/WZ-180A
Mr. Craig Schultz
Davidson Traffic Control Products
3110 70th Avenue East
Tacoma, WA 98424
Dear Mr. Schultz:
In your letter of January 21 you requested the Federal Highway Administration (FHWA) acceptance of the O-frame Type I and Type II barricade as a crashworthy traffic control device for use in work zones on the National Highway System (NHS). Accompanying your letter was the FHWA Office of Safety Design form that included a drawing and a detailed description of the device. The drawing is enclosed with the acceptance form for the Type I and Type II barricade. You have clearly outlined the slight design modification made to the previously accepted device (WZ-180) and requested that we find this device acceptable for use on the NHS under the provisions of 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 request. 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, P.E. |
| Page 1 | FEDERAL HIGHWAY ADMINISTRATION OFFICE OF SAFETY DESIGN Category 2 Work Zone Device Acceptance Letter |
Letter Number | ||||
|---|---|---|---|---|---|---|
| WZ-180A | ||||||
| Date | ||||||
| 3/9/09 | ||||||
| Contact Info | Petitioner / Developer Name and Address: | |||||
| Mr. Craig Schutz Davidson Traffic Control Products 3110 70th Ave East Tacoma, WA 98424 | ||||||
| I hereby certify that the device(s) covered by this Acceptance Letter meet(s) the crash – worthiness test and evaluation requirements of the FHWA and NCHRP Reprt 350. | ||||||
| Signature | ||||||
| Telephone# | (253) 284-8000 | |||||
| Enail Address | craigschulz@flitrona.com | |||||
| Laboratory / Engineer Name and Address | ||||||
| I hereby certify that the testing that supports this Acceptance Letter was conducted in accordance with NCHRP Report 350 guidelines, that the device(s) tested is/are accurately described on this form, and that the test results indicate that the device meets all applicate NCHRP Report 350 evaluation criteria. | ||||||
X |
I have evaluated the requested modifications to these devices previously found acceptable by the FHWA in Acceptance Letter WZ-____, and hereby certify that, in my opinion, the modifications do not adversely affect the crash performance of the devices. I also certify that these devices are acurrately described on this form. | |||||
| Signature | ||||||
| Telephone# | ||||||
| Email Address | ||||||
| Keywords | Type I & II Barricade Leg | |||||
| Type of Device (See page 3) Type I Barricade Composition of sign or Rail substrate (See page 3) Extruded Plastic | ||||||
| Thickness of substrate (inches): 0.13 | ||||||
| Flags and or lights present during test? Indicate number of each: | ||||||
| # of flags: | # of lights: | Weight of lights: | ea. | |||
| Device Name | O-Frame Barricade Leg | |||||
| Detailed Desc Of Device, Materials, sizes, Fasteners, Substrates Foundation, Aux. Features Ballast, etc. | (May be attached on seperate page(s))
O-Frame is a modification to our original A·Frame Barricade Ihat was accepted under | |||||
| Page 2 | FEDERAL HIGHWAY ADMINISTRATION OFFICE OF SAFETY DESIGN Category 2 Work Zone Device Acceptance Letter | |||
|---|---|---|---|---|
| Letter Number | WZ-180A | Date | 3/9/09 | |
| Mandatory Attachments | ||||
| Attach. #1a | Test# | |||
| Attach. #1b | Test# | |||
| Attach. #1c | Test# | |||
| Attach. #1d | Test# | |||
| Alternative | Attachment #1: Description and discussion of modification(s) to crash tested and/or accepted device. | |||
| Date: 03/06/2009 | ||||
| Attachment#2: PDF drawing(s) of device(s) | ||||
| Attach. #2a | Drawing Title: O-Frame Drawing | |||
| Drawing #: | ||||
| Attach. #2b | Drawing Title: | |||
| Drawing #: | ||||
| Attach. #2c | Drawing Title: | |||
| Drawing #: | ||||
| Attach. #2d | Drawing Title: | |||
| Drawing #: | ||||
| Attach. #2e | Drawing Title: | |||
| Drawing #: | ||||
| Attach. #2f | Drawing Title: | |||
| Drawing #: | ||||
| Attach. #2g | Drawing Title: | |||
| Drawing #: | ||||
| Page 3 | FEDERAL HIGHWAY ADMINISTRATION OFFICE OF SAFETY DESIGN Category 2 Work Zone Device Acceptance Letter |
Letter Number | ||||
|---|---|---|---|---|---|---|
| WZ-180A | ||||||
| Date | ||||||
| 3/9/09 | ||||||
Please select from the following Keywords for "Type of Device":
- Longitudinal Channclizing BalTicade
- Curb (Curb channclizer system with or wi thout road tubes or other channclizers)
- Drum
- H-Footprint Sign Stand
- X-Footprint Sign Stand
- Trailer Mounted Signs (Docs not include arrow boards or variable message signs or other Category 4 trailer mounted devices.)
- Automated Flagger Device (not trailer mounted)
- Tripod Sign Stand
- Type I Barricade
- Type II Barricade
- Type III Barricade
- Vertical Panel
- Intrusion Detector
- Ballast (Action relates to ballast on more devices)
- Channelizer (Individual units unlike cones, road tube, or drums)
Please select from the following Keywords for "Sign Substrate":
- Roll-up I Fabric (with fiberglass spreaders - aluminum or steel spreaders are not allowed.)
- Plywood
- Aluminum - Solid
- Aluminum - Laminate
- Corrugated Plastic
- Extruded Plastic
- Waffleboard Plastic
- Wood / Lumber
Please select from the following Keywurds for "Height of Sign":
The distance 10 the lowest point on the sign is:
| Low | 12 to 18 in ches above the pavement |
|---|---|
| Mid-A | 20 to 24 inches above the pavement |
| Mid-B | 25 to 36 inches above Ihe pavement |
| Mid-C | 37 to 59 inches above the pavement |
| Tall | (60 to 71 inches above the pavement |
| Oversized | 72 inches and taller |
| Page 4 | FEDERAL HIGHWAY ADMINISTRATION OFFICE OF SAFETY DESIGN Category 2 Work Zone Device Acceptance Letter |
Letter Number | ||||
|---|---|---|---|---|---|---|
| WZ-180A | ||||||
| Date | ||||||
| 3/9/09 | ||||||
Please note the following standard provisions th at apply to FHW A letters of acceptance:
- Our acceptance is limited to the crashworthiness characteristics of the devices and docs not cover thcir structural features, or conformity with the Manual on Uniform Traffic Control Devices.
- Any changcs that may adversely influence the crashworthiness of the device 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 device being marketed is significantly different from the version that was crash tested, it reserves the right to modify or revoke its 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 geomctry as that submitted for acceptance, and that they will meet the crashwonhiness requirements of FHWA and NCHRP Report 350.
- To prevent misunderstanding by others, the is letter of accetptance shall not be reproduecd except in full. This letter, and the test documentation upon which this letter is based, is public information. All such letters and documentation may be reviewed at our office upon request.
- If the subject of this letter is a patented device it is considered "proprietary." The use of proprietary work zone traffic control devices in Federal-aid projects is generally of a temporary nature. They are selected by the contractor for use as needed and removed upon completion of the project. Under such conditions they can be presumed to meet requirement "a" given below for the use of proprietary products on Federal-aid projects. On the other hand, if proprietary devices are specified by a highway agency for use on Federal-aid projeels they: (a) must be supplied through competitive bidding with equally suitable unpatented items; (b) the highway agency must certify that they are essential for synchronization with 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, a copy of which is enclosed.
- This Acceptance Letter shall not be construed as authorization or consent by the Federal Highway Administration to use, manufacture, or sell any patented device for which the applicant is nOlthe pate nt holder. The Acceptance Leiter is limi ted to the crashworthiness characteristics of the candidate device, and the FHWA is ncither prepared nor required to become involved in issues concerning patent law. Patent issues, if any, are to be resolved by the applicant.