USA Banner
  U.S. flag
              An official website of the United States government Here's how you knowOfficial US Government Icon
              **Official websites use .gov**A **.gov** website belongs to an official government organization in the United States.
            Secure Site Icon
              **Secure .gov websites use HTTPS**
                  A **lock** ( A locked padlock ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. 
 U.S. Department of Transportation Icon United States Department of Transportation
 Search DOT
            Search
                    About FHWAFHWA Organization
                Headquarters Offices
                Field Offices
                Strategic Plan
                Business Opportunities
                Staff Directories
                Careers
                Highway History
                Contact UsProgramsAcquisition Management
                Civil Rights
                Federal Lands Highway
                Infrastructure
                Innovative Program Delivery
                Operations
                Planning, Environment, and Realty
                Policy
                Research, Development, and Technology
                Safety
                Browse by TopicsResourcesCore Highway Topics
                Federal Aid Essentials
                Automation
                Complete Streets
                Laws and Regulations
                Policy & Guidance Center
                Section 508
                Publications and Statistics
                Professional Development
                National Highway Institute
                Resource Center
                Accessibility Resource Library
                FHWA Research LibraryNewsroomPress Releases
                Speeches & Testimony
                Photos
                Videos
                Media ContactsMenu FHWA Highway Safety Programs Home
                        Safety
                        Roadway Departure Safety
                        Reduce Crash Severity
                        Hardware Eligibility Letters


            
            In This Section
        Roadway Departure Safety
                Strategic Approach
                                Strategic Plan
                Crash Emphasis Brochures
                Focused Approach
                Noteworthy Practices
                Partner Resources
                Keep Vehicles on the Road
                                Pavement Friction
                Horizontal Curve Safety
                Rumble Strips and Rumble Stripes
                Nighttime Visibility
                Provide for a Safe Recovery
                                SafetyEdge
                Clear Zones
                Reduce Crash Severity
                                Overview
                Hardware Eligibility Letters
                Focus on Reducing Rural Roadway Departures (FoRRRwD)
                                Overview
                All Public Roads
                Proven Countermeasures
                Systemic Approach
                Safety Action Plans
                FoRRRwD Resources
                
                Safety Eligibility Letter WZ-20A
  
  **Hardware Type:**
            Work Zone Devices
                          **Code:**
            WZ-20A
                          **Date:**
            05/06/2016
                          **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            MDI Worldwide
                          **Device Description:**
            40CAM Sign Stands
                          **View PDF:**
            wz20a.pdf (697.32 KB)
    
    Safety Eligibility Letter WZ-20A
			
			
			 
			**Download Version**PDF [804 KB]
			
			DOT logoU.S. Department of Transportation**Federal Highway Administration**
			1200 New Jersey Ave. S.E.Washington, D.C. 20590
			May 16, 2016
			In Reply Refer To:
HSST/WZ-20A
			
			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-20A 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:
40CAM  Sign Stands***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.
      This finding of eligibility is limited to the crashworthiness of the  system and does not cover other structural features, nor conformity with the  Manual on Uniform Traffic Control Devices.
      ***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:
          40CAM Sign StandsType of system:
          Work  Zone Traffic Control DeviceDate of  request:
          June 15, 1999Date of original FHWA eligibility letter:
          October 28, 1999FHWA Control number:
          WZ-20The 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-20A 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**

1200 NEW JERSEY AVENUE, SE

WASHINGTON, DC 20590

202-366-4000Subscribe to email updates
                    About
  

        
              About FHWA
                Careers
                Org Chart
                Staff Directories
                Work with UsPrograms
  

        
              Acquisition Management
                Civil Rights
                Federal Lands Highway
                Infrastructure
                Innovative Program Delivery
                Operations
                Planning, Environment, and Realty
                Policy
                Research, Development, and Technology
                SafetyPolicies, Rights, Legal
  

        
              About DOT
                Accessibility
                Budget and Performance
                Civil Rights
                FOIA
                Information Quality
                No FEAR Act
                Office of Inspector General
                Privacy Policy
                USA.gov
                Web Policies and Notices
                Web StandardsNews & Events
  

        
              Newsroom
                Press Releases
                Speeches & Testimony
                Media Contacts
                Connect with Us