USA Banner

Official 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 ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation
FHWA Highway Safety Programs

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 Testing Manufacturer Hardware Type Device Description
CC-03 NCHRP 350 ----- Barrier Terminals and Crash Cushions Eccentric Loader guardrail terminal (Experimental) (FHWA Tech. Advisory)
B-02 NCHRP 350 International Barrier Corp. Longitudinal Barriers and Bridge Rails IBC Sand Filled Barrier (MK-7) (Operational)
B-01 NCHRP 350 (Memo to Regions) Longitudinal Barriers and Bridge Rails Modified Thrie Beam Guardrail (Operational)
B-01A NCHRP 350 Longitudinal Barriers and Bridge Rails
CC-02 NCHRP 350 Syro Steel Co Barrier Terminals and Crash Cushions Controlled Releasing Terminal (CRT) (Experimental) (FHWA Bulletin)
CC-01 NCHRP 350 Energy Absorption Systems, Inc Barrier Terminals and Crash Cushions SENTRE guardrail terminal (experimental) [see CC-10]
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"
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.)