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
WZ-296 NCHRP 350 Eastern Metal/USA Sign Work Zone Devices X-101 and X-102 sign stands
B-150C NCHRP 350 Gregory Highway Products Longitudinal Barriers and Bridge Rails Gregory Mini Spacer (GMS) W-Beam Guardrail
B-203 NCHRP 350 GSI High Tension Cable LP Longitudinal Barriers and Bridge Rails Four Cable Transition to W-Beam Guardrail
CC-110 NCHRP 350 Energy Absorption Systems, Inc. Barrier Terminals and Crash Cushions Test Level (TL-2) ACZ 350 System
B-209 NCHRP 350 Louisiana Department of Transportation and Development Longitudinal Barriers and Bridge Rails Test Level 2 (TL-2) T-Intersection (Short Radius) Guardrail System
CC-109 NCHRP 350 Barrier Systems, Inc. Barrier Terminals and Crash Cushions X-TENuator (X-TEN) & X-TENuator (X-TEN) with Slider Panel Modification
WZ-294 NCHRP 350 Dicke Safety Products Work Zone Devices portable sign stands with 60-inch x 60-inch roll up signs
WZ-17A NCHRP 350 Dicke Safety Products Work Zone Devices DF3000P Portable Sign Stand
WZ-250B NCHRP 350 Dicke Safety Products Work Zone Devices DL1008-SM and SDL1008-SM sign stands
WZ-293 NCHRP 350 Work Zone Devices ShowMeStand ground-mounted portable sign stand