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
CC-81 NCHRP 350 TRINITY Industries Barrier Terminals and Crash Cushions CPSI side- impact enhancement for ET seriesl
CC-76 NCHRP 350 Texas Transportation Institute Barrier Terminals and Crash Cushions 3-strand cable guardrail terminal @ TL-3
B-85B NCHRP 350 TRINITY Industries Longitudinal Barriers and Bridge Rails Modification to KING block
B-29D NCHRP 350 RAMCO International Longitudinal Barriers and Bridge Rails Modification to Polylumber block
CC-12K NCHRP 350 TRINITY Industries Barrier Terminals and Crash Cushions Alternative post design for ET series
SS-109 NCHRP 350 Prairie Proto Products Sign Supports, Mailboxes, and Delineator Posts Swing-away Mailbox Support and Delineators
WZ-126 NCHRP 350 Lang Products Work Zone Devices LTT-1 Portable Sign Stand
WZ-129 NCHRP 350 D.P.Sawyer, TTI Work Zone Devices Low-Height Temporary Rigid Panel Sign Stand
B-104 NCHRP 350 Pennsylvania Department of Transportation Longitudinal Barriers and Bridge Rails Concrete parapet w/steel rail @ TL-5
WZ-128 NCHRP 350 Three-D Traffic Works Work Zone Devices Type III Barricade 7/12/02