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                Safety Eligibility Letter WZ-316
  
  **Hardware Type:**
            Work Zone Devices
                          **Code:**
            WZ-316
                          **Date:**
            09/04/2012
                          **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            MDI Traffic Control Products
                          **Device Description:**
            MDI 4812KC-60 X-Footprint Portable Sign Stand
                          **View PDF:**
            wz316.pdf (816.61 KB)
    
    Safety Eligibility Letter WZ - 316
            
            	
          	DOT logo
            	U.S. Department of Transportation**Federal Highway Administration
                400 Seventh St., S.W.Washington, D.C.  20590**
                
          	
			 
			**Download Version**PDF [817 KB]
                
        	September 4, 2012
            In Reply Refer To: **WZ-316**
            Glenda Bleau
            	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:
                    MDI 4812KC-60 Sign StandType of  system:
                    X-Footprint portable sign standTest  Level:
                    NCHRP Report 350 Test Level 3Testing  conducted by:
                    N/ADate of  request:
                    April 13,  2012
            
            **Decision**
            The following device is eligible, with details provided in  the form which is attached as an integral part of this letter:
            MDI 4812KC-60 X-footprint portable Sign StandBased on a review of a comparison of the subject portable  sign stand to prior crash test results detailed in FHWA Letters WZ-69 and  WZ-164 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 device and supporting documentation are described in  the attached form. The 4812KC-60 has a  smaller base and the diameter of the upright is smaller than the 4815RBK-60  sign stand detailed in FHWA letter WZ-164, dated November 7, 2003. The 4812KC-60 has a smaller base, diameter of  the upright is smaller than the 4860K sign stand detailed in FHWA letter WZ-69  dated May 9, 2001. The 4812KC-60 only holds roll-up signs.
            **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-316 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.
          		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 of Mike S. Griffith***
            Michael S. Griffith
            	Director, Office of Safety Technologies
                Office of Safety
          	Enclosures U.S. DEPARTMENT OF TRANSPORTATION

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