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                Safety Eligibility Letter WZ-314
  
  **Hardware Type:**
            Work Zone Devices
                          **Code:**
            WZ-314
                          **Date:**
            05/04/2012
                          **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            MDI Worldwide
                          **Device Description:**
            Portable Sign Stands
                          **View PDF:**
            wz314.pdf (1.25 MB)
    
    Safety Eligibility Letter WZ - 314
            
            	
          	DOT logo
            	U.S. Department of Transportation**Federal Highway Administration
                400 Seventh St., S.W.Washington, D.C.  20590**
                
          	
			 
			**Download Version**PDF [1.24 MB]
                
        	May 4, 2012
          In Reply Refer To: **HSST/WZ-314**
            Glenda Bleau
              Sales Supervisor & Product Manager
              MDI Traffic Control Products
              38271 W Twelve Mile Road
            Farmington Hills, Michigan  48331
            Dear Ms. Bleau:
          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:
                4814CAMAType of system:
                X-Footprint compact portable sign standTest Level:
                NCHRP Report 350 Test Level 3Testing conducted by:
                N/ADate of request:
                July 14, 2011**Decision:**
The following device is eligible, with details provided in the form which is attached  as an integral part of this letter:
            4814CAMA X-Footprint compact portable sign  standBased on a review of past crash test results and a  description of the non-significant modification submitted by the manufacturer  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 National Cooperative Highway Research Program (NCHRP) Report 350 or the  American Association of State Highway and Transportation Officials’ Manual for  Assessing Safety Hardware (MASH).
          **Description**
            The crash tested stand, Model Number 4814DLK (FHWA Letter  WZ-3) was modified by including an upright with a camlock (FHWA Letter WZ-20)  instead of a “drop and lock.”  We concur  that this stand qualifies as a "compact sign stand" requiring no additional  crash testing.
            **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-314 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.
              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.MDI portable 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,

            Michael S. Griffith
            	Director, Office of Safety Technologies
                Office of Safety
          	Enclosures U.S. DEPARTMENT OF TRANSPORTATION

**Federal Highway Administration**

1200 NEW JERSEY AVENUE, SE

WASHINGTON, DC 20590

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