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(c) | NCHRP 350 | TTI Report, Note 2 | Work Zone Devices | 1) Type III Hollow Core Plastic Barricade4 (see Figure II.9 "Figure 1.")(Vertical braces were added to support the panels prior to putting them in place on the barricade.) 2) Type III Perforated Tubing Barricade (3.7 m) (see Figure II.10 "Figure 2.") (Vertical braces added, as noted above. Base connection detail also modified. Acceptable with 1x8 wood or hollow core plastic rails.) 3) Type III perforated Tubing Barricade (1.2 m) (see Figure II.11 "Figure 3.") (Vertical braces added, as noted above. Base connection detail also modified. Acceptable with 1x8 wood or hollow core plastic rails.) 4) HwyCom Fiberglass Type III Barricade with plastic panels (see Figure II.12 "Figure 4.") (Round 76-mm diameter fiberglass pipes were used as the supports.) 5) Price Fiberglass Type III Barricade (see Figure II.13 "Figure 5.") (89 mm x 32 mm x 6.4 mm fiberglass U-channel supports were used.) 6) Spring-loaded Portable Sign Support (3) (see Figure II.14 "Figure 7") (Tested with mounting height of 610-mm.) 7) Ground-mounted Type III barricade (see Figure II.15 "Figure 8.") (Steel supports ground mounted in Poz-Loc sockets. Also acceptable with fiberglass supports in a "Universal" anchor, and with perf. square steel tubes in anchors.) 8) Vertical Panel Assembly (three shown in Figure II.16 "Figure 11.") (Plywood panels mounted on wood, steel angle, and plastic c-channel posts.) 9) Skid-mounted Sign Support. (See Figure II.17 "Figure 10.") (No modifications, but was tested end-on.) |
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| B-114A | NCHRP 350 | NPCG LLC | Longitudinal Barriers and Bridge Rails | DuroBlock Spacer | |
| WZ-10 | NCHRP 350 | Reserved | Work Zone Devices | ||
| 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. |