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-96 NCHRP 350 Memo to Florida Division Work Zone Devices Florida DOT Fiberglass Composite Sign Stand for Maintenance Work Zones
WZ-97 NCHRP 350 Highway Safety Products Work Zone Devices Various Dicke Tool Products
SS-99 NCHRP 350 Transpo Industries, Inc. Sign Supports, Mailboxes, and Delineator Posts Dual and Triple Posts on double-necked couplings
CC-35E NCHRP 350 Energy Absorption Systems, Inc. Barrier Terminals and Crash Cushions 9-bay unit @TL-3 for 70mph
CC-35D Energy Absorption Systems, Inc. Barrier Terminals and Crash Cushions 9-bay unit w/ add'l capacity@TL-3
WZ-95 NCHRP 350 United Rentals Work Zone Devices High SafetyCor X-Tube Speed Limit Sign #129
WZ-93 NCHRP 350 United Rentals Work Zone Devices SafetyCor X-Tube Speed Limit Sign #127
WZ-90 NCHRP 350 United Rentals Work Zone Devices Low SafetyCor X-Tube Sign Stand #124
WZ-92 NCHRP 350 United Rentals Work Zone Devices Airspill Vertical Panel, with light #126
WZ-94 NCHRP 350 United Rentals Work Zone Devices High SafetyCor X-Tube Speed Limit Sign #128