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                Safety Eligibility Letter WZ-311
  
  **Hardware Type:**
            Work Zone Devices
                          **Code:**
            WZ-311
                          **Date:**
            01/19/2012
                          **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            Dicke Safety
                          **Device Description:**
            STF 18 with 84” Mounting Height
                          **View PDF:**
            wz311.pdf (814.14 KB)
    
    Safety Eligibility Letter WZ - 311
            
            	
          	DOT logo
            	U.S. Department of Transportation**Federal Highway Administration
                400 Seventh St., S.W.Washington, D.C.  20590**
                
          	
			 
			**Download Version**PDF [815 KB]
                
        	January 19, 2012
          In Reply Refer To: **HSST/WZ-311**
            John M. Pasakarnis
              Dicke Tool Company
              1201 Warren Avenue
            Downers Grove, Illinois  60515
            Dear Mr. Paskarnis:
          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:
                STF18 with Extended MastType of system:
                Portable X-footprint sign stand for roll-up signsTest Level:
                NCHRP Report 350 Test Level 3Testing conducted by:
                N/ADate of request:
                October 11, 2011Date initially acknowledged:
                 November 15, 2011Date of completed package:
                October 11, 2011**Decision:**
            The following device is eligible, with details provided in  the form and incoming correspondence which are enclosed as integral parts of  this letter:
STF18 with Extended Mast for roll up signsBased on a review of the analysis submitted by the  manufacturer certifying the device described herein meets the crashworthiness  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**
  Roadside safety devices should meet the guidelines  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).**Findings**
  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 is limited to the  crashworthiness characteristics of the systems and does not cover their  structural features, nor conformity with the Manual on Uniform Traffic Control  Devices.
  Any changes that may influence the  crashworthiness of the system 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 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 the same chemistry, mechanical  properties, and geometry as that submitted for review, and that it will meet  the crashworthiness requirements of the NCHRP Report 350.
  To prevent misunderstanding by others, this  letter of eligibility is designated as number WZ-311 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 finding of eligibility is limited to the crashworthiness  characteristics of the candidate system, and the FHWA is neither prepared nor  required to become involved in issues concerning patent law. Patent issues, if  any, are to be resolved by the applicant.
Sincerely yours,

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

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WASHINGTON, DC 20590

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