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
B-176 NCHRP 350 Hill and Smith Longitudinal Barriers and Bridge Rails Zonguard portable steel barrier
B-162B NCHRP 350 NUCOR MARION Steel Longitudinal Barriers and Bridge Rails N/A
WZ-244 NCHRP 350 Plastic Safety Systems Work Zone Devices Updates to previously issued acceptance letters
CC-101 NCHRP 350 Texas Transportation Institute Barrier Terminals and Crash Cushions 27-inch high Steel Post Slotted Rail Terminal (SRT-27SP)
B-165 NCHRP 350 Malcolm H. Ray Longitudinal Barriers and Bridge Rails MDS-4 and MDS-5 Steel Barriers
CC-88A NCHRP 350 MWRSF Barrier Terminals and Crash Cushions SKT & FLEAT with wood posts
LS-67 NCHRP 350 Dynamic Lighting Systems Luminaire Supports Dynamic Lighting decorative poles and ground stub
WZ-271 NCHRP 350 Three D Traffic Works Work Zone Devices Ringtop Slim-Line Channelizer, and Universal Vertical Panel :TD 7500 and TD 6500
WZ-270 NCHRP 350 GRIMCO Work Zone Devices Max-metal : 3 and 4mm substrates
WZ-272 NCHRP 350 Telematics Services Work Zone Devices i-Cone Intelligent Traffic Beacon is a set of electronic modules sealed in a traffic drum including a battery.