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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
B-155 NCHRP 350 Corpacero Longitudinal Barriers and Bridge Rails HDPE Spacer Block, TL-3
WZ-75A NCHRP 350 Acme Barricades Work Zone Devices Portable Sign Stand
WZ-251 NCHRP 350 Barrierre QMB Canada Inc. Work Zone Devices Gate channelizer (plastic)
WZ-250 NCHRP 350 Dicke Tool Company Work Zone Devices Portable Sign Stand
WZ-249 NCHRP 350 Bone Safety Signs Work Zone Devices 3mm and 4mm Bone Light aluminum laminate sign substrate
SS-123# NCHRP 350 Designovations Sign Supports, Mailboxes, and Delineator Posts Snap N Safe coupling for square sign supports
SS-142 NCHRP 350 Dent Breakaway Industries Sign Supports, Mailboxes, and Delineator Posts Omni directional slip base accommodates round and square posts for dual post supports
CC-95 NCHRP 350 TrafFix Devices, Inc Barrier Terminals and Crash Cushions The Compressor is a redirective, non-gating Crash Cushion
WZ-242 NCHRP 350 Bone Safety Signs Work Zone Devices X-Footprint Sign Stand
WZ-248 NCHRP 350 Eastern Metal /USA Sign Work Zone Devices X-Footprint sign stand