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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-314 NCHRP 350 MDI Worldwide Work Zone Devices Portable Sign Stands
SS-134B NCHRP 350 Xcessories Squared Sign Supports, Mailboxes, and Delineator Posts Xcessories Squared Redi-Torque Triangular Slip Base
Xcessories Squared Redi-Torque Triangular Slip Base Top (10 3/8”) with galvanized keeper plate
Top (10 3/8”) with galvanized keeper plate
WZ-312 NCHRP 350 POCO Work Zone Devices Lightweight Rigid Signs on sign stands
CC-93B NCHRP 350 Safence Barrier Terminals and Crash Cushions TL3 Terminal at 2m post spacing
CC-88E NCHRP 350 Road Systems Barrier Terminals and Crash Cushions FLEAT Median terminal for MGS
B-222 NCHRP 350 Armorflex Longitudinal Barriers and Bridge Rails TL-4 Armorwire Cable Barrier
WZ-313 NCHRP 350 MOTPlans.com Work Zone Devices Type I Barricade
WZ-311 NCHRP 350 Dicke Safety Work Zone Devices STF 18 with 84” Mounting Height
B-227 NCHRP 350 Washington State DOT Longitudinal Barriers and Bridge Rails TL-3 High Tension 3 Cable Median & Roadside Barriers
CC-123F NCHRP 350 EASI Barrier Terminals and Crash Cushions TREND 350, Flared