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                Safety Eligibility Letter WZ-333
  
  **Hardware Type:**
            Work Zone Devices
                          **Code:**
            WZ-333
                          **Date:**
            05/06/2014
                          **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            MDI Worldwide
                          **Device Description:**
            4814SL Screw Lock Sign Stand
                          **View PDF:**
            wz333.pdf (644.87 KB)
    
    Safety Eligibility Letter WZ-333
			
			
			 
			**Download Version**PDF [644 KB]
			
			DOT logoU.S. Department of Transportation**Federal Highway Administration**
			1200 New Jersey Ave. S.E.Washington, D.C. 20590
			May 6, 2014
			In Reply Refer To:
HSST/WZ-333
			
			Mr. Troy Tapley
			  MDI Worldwide
			  38271 West Twelve Mile Road
		    Farmington Hills, Michigan 48331
Dear Mr. Tapley:
			This letter is in response to your request for  the Federal Highway Administration (FHWA) to review a roadside safety system  for eligibility for reimbursement under the Federal-aid highway program.
			Name of system:
			    4814SL Screw Lock Sign StandType of system:
			    Compact X-Footprint Roll Up Sign StandTest Level:
			    NCHRP Report 350 Test Level 3Testing conducted by:
			    Texas Transportation InstituteDate of  request:
			    2/14/2014**Decision**
	    The following device is eligible, with details provided in the form which is attached as an   integral part of this letter:
	    4814 SL Screw Lock compact X-footprint stand for Roll Up signsBased on a review of crash test results certifying  the device described herein meets the crash test and evaluation criteria of the  National Cooperative Highway Research Program (NCHRP) Report 350, the device is  eligible for reimbursement under the Federal-aid highway program. Eligibility for reimbursement under the  Federal-aid highway program does not establish approval or endorsement by the  FHWA for any particular purpose or use.
        The FHWA, the Department of Transportation, and the  United States Government do not endorse products or services and the issuance  of a reimbursement eligibility letter is not an endorsement of any product or  service.
**Requirements**

	    To be found eligible for Federal-aid funding, roadside safety devices should meet the crash test and evaluation criteria contained in the NCHRP Report 350 or the American Association of State Highway and Transportation Officials' Manual for Assessing Safety Hardware (MASH).
	    **Description**
        This stand qualifies as a "Compact Sign Stand" that does  not require additional crash testing for certain modifications. The  modifications to the crash-tested device and supporting documentation are  described in the attached form.
**Summary and Standard Provisions**
  Therefore, the system described and detailed in the  attached form is eligible for reimbursement and may be installed under the  range of conditions tested.
Please note the following standard provisions that apply to FHWA eligibility letters:
This finding of eligibility does not cover other  structural features of the systems, nor conformity with the Manual on Uniform  Traffic Control Devices.
      Any changes that may influence system  conformance with NCHRP Report 350 criteria will require a new reimbursement  eligibility letter.
      Should the FHWA discover that the qualification  testing was flawed, that in-service performance reveals safety problems, or  that the system is significantly different from the version that was crash  tested, we reserve the right to modify or revoke this letter.
      You are expected to supply potential users with  sufficient information on design and installation 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 crash test and evaluation criteria of the NCHRP Report  350.
      To  prevent misunderstanding by others, this letter of eligibility is designated as  number WZ-333 and shall not be reproduced except in full. This letter and the test documentation upon  which it is based are public information.Â   All such letters and documentation may be reviewed at our office 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. The FHWA does not become  involved in issues concerning patent law. Patent issues, if any, are to be  resolved by the applicant.
      The MDI  sign stands are patented products and considered 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

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WASHINGTON, DC 20590

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