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 Sort ascending Testing Manufacturer Hardware Type Device Description
WZ-278 NCHRP 350 Plastic Safety Systems Work Zone Devices Water or Sand filled Type II barricade with ADA consideration
B-141E NCHRP 350 Trinity Industries Longitudinal Barriers and Bridge Rails CASS with C-Channel posts
CC-97A NCHRP 350 Plastic Safety Systems Barrier Terminals and Crash Cushions Interchangeability of Crash Guard Sand Barrel System TL-3
CC-35I NCHRP 350 Energy Absorption Systems, Inc. Barrier Terminals and Crash Cushions 5-bay QuadGuard II
5-bay QuadGuard II Wide
2-bay QuadGuard II
Test Levels 2 and 3
WZ-277 NCHRP 350 Lifetime Products / Off The Wall Products Work Zone Devices Water-filled channelizing device based on testing conducted of WZ-255
B-141D NCHRP 350 Trinity Industries Longitudinal Barriers and Bridge Rails CASS of 141C on 6:1 slopes or flatter
WZ-180a NCHRP 350 Davidson Traffic Control Products

Davidson Traffic Control Products
Work Zone Devices Modified the A-frame support in WZ-180 to an O-frame for type 1 and type 2 parade style barricade.
LS-68 NCHRP 350 Shakespeare Products Luminaire Supports Shakespeare decorative poles (14)
B-42A NCHRP 350 Rockingham precast Longitudinal Barriers and Bridge Rails Permits 18 and 20 ft long segments
B-170A NCHRP 350 South Carolina Department of Transportation Longitudinal Barriers and Bridge Rails Temporary Concrete Barrier Wall and Anchorage