Archived Hardware Eligibility Letters – NCHRP 350
These letters are archived and are posted for "historical and research purposes only" per the sunset dates in the AASHTO/FHWA Joint Implementation Agreement and exceptions to these dates as posted on the AASHTO Committee on Design website.
| Letter | Date Sort ascending | Testing | Manufacturer | Hardware Type | Device Description |
|---|---|---|---|---|---|
| WZ-03(e) | NCHRP 350 | Services & Materials Co. | Work Zone Devices | VB-RFL. Vertical panel acceptable as a Category 2 device without lights. Tested with lights, but no details of the light / battery are available. (More information is needed before this vertical panel can be found acceptable with lights.) | |
| WZ-27 | NCHRP 350 | The Roadmaker Company | Work Zone Devices | Type II Barricade | |
| WZ-03(b) | NCHRP 350 | TTI Report, Note 1 | Work Zone Devices | 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" |
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| WZ-79 | NCHRP 350 | Alusuisse Composites | Work Zone Devices | Equivalence for Dibond and Alpolic. | |
| WZ-03(g) | NCHRP 350 | Wyoming DOT | Work Zone Devices | Wood Type III Barricade (150-mm square wood horizontals and uprights, 3000-mm wide panels. See AASHTO Roadside Design Guide Figure 9.18. Mass of tested unit was 150 kg, not 725 as shown.) | |
| WZ-03(d) | NCHRP 350 | Flasher Handling | Work Zone Devices | Air Spill Barricade. Flexible vertical panel fixed to a 44.5-mm wide, 1170-mm tall fiberglass support. Support is fixed to a low-profile rubber base.(See Figure II.18) | |
| WZ-03(a) | NCHRP 350 | TTI for Texas D.O.T. | Work Zone Devices | TTI tested numerous work zone traffic control devices. All the devices listed here were successfully tested in these two crash test programs and met TL-3 criteria. The attached drawings illustrate the tested hardware but do not necessarily provide enough information to fabricate the device. The crash testing is fully documented in the two reports1,2 which should be consulted for additional details of the hardware |