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
CC-88 NCHRP 350 Road Systems, Incorporated Barrier Terminals and Crash Cushions SKT/FLEAT terminals for MGS guardrail
WZ-100#6 NCHRP 350 Korman Signs, Inc. Work Zone Devices Sign Stands, Rigid Substrates, Type III Barricades
WZ-202 NCHRP 350 Remcom Plastics Work Zone Devices Type I and Type II Barricades
WZ-199 NCHRP 350 Personal Safety First Work Zone Devices Rubbersand Ballast
CC-27A NCHRP 350 Engineered Arresting Systems Corporation Barrier Terminals and Crash Cushions 18-inch dia. water twister
B-133 NCHRP 350 Midwest Roadside Safety Facility Longitudinal Barriers and Bridge Rails Midwest Guardrail System (MGS)
WZ-196 NCHRP 350 Plastic Safety Systems Work Zone Devices Type III Barricades
WZ-203 NCHRP 350 Oregon DOT, Generic Work Zone Devices Single Wood Post Temporary Sign
SS-127 NCHRP 350 Ultimate Highway Products, Inc. Sign Supports, Mailboxes, and Delineator Posts Slip-Mate Slip Base
CC-87 NCHRP 350 Energy Absorption Systems, Inc. Barrier Terminals and Crash Cushions QUEST crash cushion @ TL-3