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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-88E NCHRP 350 Safence Longitudinal Barriers and Bridge Rails TL-4 four cable tensioned barrier
SS-151 NCHRP 350 SHUR-TITE Products Sign Supports, Mailboxes, and Delineator Posts Mailbox Support
CC-78D NCHRP 350 Energy Absorption Systems, Inc. Barrier Terminals and Crash Cushions Safe-Stop trailer TMA
CC-57B NCHRP 350 Energy Absorption Systems Barrier Terminals and Crash Cushions QUADGUARD Elite system 8 bays
B-177 NCHRP 350 TGS Trinity Industries Longitudinal Barriers and Bridge Rails Trinity Guardrail Systems (T-31 and T-39 in both US and SI panels and post spacings.)
CC-35H NCHRP 350 Energy Absorption Systems Barrier Terminals and Crash Cushions modification to QUADGUARD system
B-161 NCHRP 350 NYSDOT Longitudinal Barriers and Bridge Rails Generic 4-strand cable barrier system
SS-128 NCHRP 350 Northwest Pipe Company Sign Supports, Mailboxes, and Delineator Posts Poz Loc Slipbase Casting 2709
CC-99 NCHRP 350 Impact Absorption Barrier Terminals and Crash Cushions U-MAD trailer-mounted attenuator
SS-150 NCHRP 350 Northwest Pipe Company Sign Supports, Mailboxes, and Delineator Posts Poz-Loc 8 inch square slip base