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                        Hardware Eligibility Letters


            
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                Safety Eligibility Letter WZ-03(b)
  
  **Hardware Type:**
            Work Zone Devices
                          **Code:**
            WZ-03(b)
                                  **Testing Criteria:**
            NCHRP 350
                          **Manufacturer:**
            TTI Report, Note 1
                          **Device Description:**
            1) Spring Mounted Sign Support with Plastic/Fabric Sign3 (see Figure II.1, "Figure 21")
2) Portable Sign Support with Plastic/Fabric Sign3, with flags added on top (see Figure II.2, "Figure 29")
3) D-4 Sign Trailer with Wooden sign Panel
(see Figure II.3, "Figure 33") 
4) Skid Mounted Sign Support with Plywood Sign Panel (see Figure II.4, "Figure 37")
5) Perforated Steel Tube Type III Barricade with Plastic Panels (see Figure 11.5 "Figure 41" & "Figure 45")
6) Perforated Steel Tube Type III Barricade with 1x8 Wood Panels (see Figure 11.6 "Figure 42")
7) Schematic of Plastic Type III Barricade by Tex-Mex Barricade (see Figure II.7 "Figure 57")[this hardware may no longer be in production.]
8) Hollow Core Recycled Plastic Type III Barricade 4 
(see Figure II.8 "Figure 61"
                          **View PDF:**
            wz-3.pdf (4.17 MB) U.S. DEPARTMENT OF TRANSPORTATION

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