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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 Sort ascending Testing Manufacturer Hardware Type Device Description
CC-19 NCHRP 350 Connecticut DOT Barrier Terminals and Crash Cushions Generalized Connecticut Impact Attenuation System (GCIAS)
LS-30 NCHRP 350 Luminaire Supports FHWA Breakaway Timber Utility Pole (Operational) (Six-bolt slip base)
CC-18 NCHRP 350 Wyoming DOT Barrier Terminals and Crash Cushions Box Beam End Treatment (Numbered "B-23" in error)
B-20A NCHRP 350 Mobil Chemical Company Suppl. Longitudinal Barriers and Bridge Rails permits use as a blockout on steel posts.
B-22 NCHRP 350 Ryerson Plastics Longitudinal Barriers and Bridge Rails Steel Reinforced Recycled Plastic Guardrail Posts
B-23 NCHRP 350 MGS Innovations Longitudinal Barriers and Bridge Rails Precast Concrete Barrier (See Number CC-18 for Wyoming Box Beam End Treatment)
B-21 NCHRP 350 Energy Absorption Systems Longitudinal Barriers and Bridge Rails Triton Water Filled Barrier for Low Speed Applications
LS-23A NCHRP 350 PrecisionForm Luminaire Supports Supplement Removes Certain Conditions
SS-33 NCHRP 350 Transpo Industries, Inc. Sign Supports, Mailboxes, and Delineator Posts 201C and 301C Pole-Safe couplings for Motorist Aid Call Box Supports
SS-32 NCHRP 350 Sign Supports, Mailboxes, and Delineator Posts Western Red Cedar for Breakaway Wood Supports