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-250A NCHRP 350 Dicke Safety Products Work Zone Devices DL1000L, DL1000W, SDL1000L and SDL1000W sign stands
WZ-141A NCHRP 350 Dicke Safety Products Work Zone Devices sign stand, model number UF2000T
WZ-25A NCHRP 350 Dicke Safety Products Work Zone Devices Model FS2000W portable sign stand
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-140A NCHRP 350 Impact Recovery Systems, Inc. Work Zone Devices OminiPed Solar Pedestrian Vertical Panel
B-141F NCHRP 350 Trinity's Cable Safety System (CASS S3 4:1) Longitudinal Barriers and Bridge Rails Four cable median and roadside barrier system
B-82D NCHRP 350 Hill & Smith Ltd. Longitudinal Barriers and Bridge Rails Brifen Wire Rope Safety Fence
B-207 NCHRP 350 Texas Transportation Institute Longitudinal Barriers and Bridge Rails Modified Ohio DOT (ODOT) Deep Beam Bridge Railing (Guardrail Barrier)