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                Safety Eligibility Letter WZ-320A
  
  **Hardware Type:**
            Work Zone Devices
                          **Code:**
            WZ-320A
                          **Date:**
            06/01/2016
                          **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            MDI Worldwide
                          **Device Description:**
            5012 Sign Stands with Post Tube Mast
                          **View PDF:**
            wz320a.pdf (691.53 KB)
    
    Safety Eligibility Letter WZ-320A
			
			
			 
			**Download Version**PDF [752 KB]
			
			DOT logoU.S. Department of Transportation**Federal Highway Administration**
			1200 New Jersey Ave. S.E.Washington, D.C. 20590
			June 1, 2016
			In Reply Refer To:
HSST-1/WZ-320A
			
			Mr. Troy Tapley
MDI Worldwide
38271 W. Twelve Mile Road

Farmington Hills, Michigan 48331
Dear Mr. Tapley:
			This letter is in response to your December 29, 2015 request for the Federal Highway Administration (FHWA) to review a roadside safety device, hardware, or system for eligibility for reimbursement under the Federal-aid highway program.  This FHWA letter of eligibility is assigned FHWA control number WZ-320A and is valid until a subsequent letter is issued by FHWA that expressly references this device.
	  ***Decision***
The following devices are eligible, with details provided  in the form which is attached as an integral part of this letter:
5012 Sign Stands with Post Tube Mast***Scope of this  Letter***
      To be found eligible for Federal-aid funding, modified roadside safety devices should meet the crash test and evaluation criteria contained in the National Cooperative Highway Research Program (NCHRP) Report 350. However, the FHWA, the Department of Transportation, and the United States Government do not regulate the manufacture of roadside safety devices. Eligibility for reimbursement under the Federal-aid highway program does not establish approval, certification or endorsement of the device for any particular purpose or use.
      This letter is not a determination by the FHWA, the Department of Transportation, or the United States Government that a vehicle crash involving the device will result in any particular outcome, nor is it a guarantee of the in-service performance of this device. Proper manufacturing, installation, and maintenance are required in order for this device to function as tested.
      FHWA previously issued an eligibility letter for the roadside safety system described in your pending request. Your pending request now identifies a modification to that roadside safety system.
      ***Eligibility for  Reimbursement***
      FHWA previously issued an eligibility letter for the roadside safety system described in your pending request. Your pending request now identifies a modification to that roadside safety system.
      The original roadside safety device information is provided here:
      Name of system:
          5012 Sign Stands with Post Tube MastType of system:
          Work Zone Traffic Control DeviceDate  of Original Request:
          April  13, 2012Date of original FHWA eligibility letter:
          September  4, 2012FHWA Control number:
          WZ-320The pending modification(s) consists of the following changes:
      The legs to be constructed with  steel or aluminum. In addition, the legs  to be telescoping and non-telescoping.
        The legs to be constructed  with square tubing not to exceed 1.25 in × 1.25 in × .06 in [30 mm × 30 mm × 1.5 mm] and 1.00 in × 1.00 in × .06 in [25 mm × 25 mm × 1.5 mm].FHWA concurs with the recommendation of the accredited crash testing  laboratory as stated within the attached form.
      ***Full Description  of the Eligible Device***
      The device and supporting documentation, including reports of the crash tests or other testing done, videos of any crash testing, and/or drawings of the device, are described in the attached form.
      ***Notice***
      If a  manufacturer makes any modification to any of their roadside safety hardware  that has an existing eligibility letter from FHWA, the manufacturer must notify  FHWA of such modification with a request for continued eligibility for  reimbursement. The notice of all  modifications to a device must be accompanied by:
Significant modifications – For these modifications, crash        test results must be submitted with accompanying documentation and        videos.
      Non-signification modifications – For these modifications, a        statement from the crash test laboratory on the potential effect of the        modification on the ability of the device to meet the relevant crash test        criteria.FHWA's determination of continued eligibility for the modified hardware will be based on whether the modified hardware will continue to meet the relevant crash test criteria.
      You are expected to supply potential users with sufficient  information on design, installation and maintenance 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 test and evaluation criteria of the NCHRP Report 350.
        Issuance of this letter does not convey property rights of any sort or any exclusive privilege. This letter is based on the premise that information and reports submitted by you are accurate and correct. We reserve the right to modify or revoke this letter if: (1) there are any inaccuracies in the information submitted in support of your request for this letter, (2) the qualification testing was flawed, (3) in-service performance or other information reveals safety problems, (4) the system is significantly different from the version that was crash tested, or (5) any other information indicates that the letter was issued in error or otherwise does not reflect full and complete information about the crashworthiness of the system.
      ***Standard Provisions***
      To prevent  misunderstanding by others, this letter of eligibility designated as FHWA  control number WZ-320A 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 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.
If the subject  device is a patented product it may be considered to be proprietary. If proprietary systems are specified by a  highway agency for use on Federal-aid 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.Sincerely yours,
			Signature Michael S. Griffith
			Michael S. Griffith
Director,  Office of Safety Technologies
              Office of SafetyEnclosures U.S. DEPARTMENT OF TRANSPORTATION

**Federal Highway Administration**

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WASHINGTON, DC 20590

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