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
B-60 NCHRP 350 Trinity Industries, Inc. Longitudinal Barriers and Bridge Rails O-rail Corrugated Metal-Beam Guardrail
CC-60A King Mak, TTI Barrier Terminals and Crash Cushions WYBET Material Specifications
B-59 NCHRP 350 R&P Products Longitudinal Barriers and Bridge Rails R&P Block for Strong-post W-beam Guardrail
CC-52A NCHRP 350 Dave Gertz, Traffix Devices, Inc. Barrier Terminals and Crash Cushions Modification in Orientation of 700-lb Module
WZ-20 NCHRP 350 Market Displays International Work Zone Devices Portable Sign Stands
WZ-23 NCHRP 350 WLI Industries, Inc. Work Zone Devices High Level Work Zone Sign System
WZ-22 NCHRP 350 Work Zone Devices Yodock 2001 m Barrier w/ T3 Apparatus
B-57 NCHRP 350 Aloha Plastic Recycling, Inc. Longitudinal Barriers and Bridge Rails Recycled Polyethylene Block
B-58 NCHRP 350 Midwest Roadside Safety Facility Longitudinal Barriers and Bridge Rails Clear-span Nested W-beam Guardrail
WZ-21 NCHRP 350 Korman Signs Inc. Work Zone Devices "X-Footprint" Sign Stands