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
B-63 NCHRP 350 Barrier Systems, Inc. Longitudinal Barriers and Bridge Rails Quickchange Moveable Barrier (QMB)
WZ-26 NCHRP 350 Work Area Protection Coporation Work Zone Devices B-400 Drum
WZ-24 NCHRP 350 TrafFix Devices, Inc. Work Zone Devices Work Zone Traffic Control Devices
CC-62 NCHRP 350 Dale Wilken, Eastern Resource Center Barrier Terminals and Crash Cushions Vermont Low-Speed W-beam Guardrail Terminal (G1-d) @ TL-2
SS-86 NCHRP 350 Woodguard Lumber Corporation Sign Supports, Mailboxes, and Delineator Posts 89-mm polyethylene coated sign post
B-62 NCHRP 350 Gunnar Prefab AB Longitudinal Barriers and Bridge Rails GPLINK pre-cast Temporary Concrete Barrier
SS-68E NCHRP 350 Xcessories Squared Sign Supports, Mailboxes, and Delineator Posts Modification to 10-inch, 3-boltslip base
CC-50B NCHRP 350 Energy Absorption Systems, Inc. Barrier Terminals and Crash Cushions Wide-REACT Acceptance downgraded to CONDITIONAL @ TL-3
B-61 NCHRP 350 Rich Peter, California DOT Longitudinal Barriers and Bridge Rails K-rail (NJ Barrier) for Semi-permanent Installations
B-37A NCHRP 350 K. Mak, TTI Longitudinal Barriers and Bridge Rails Box-Beam Transistions to WY TL-3 and TL-4 Bridge Railings