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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-25B NCHRP 350 Trinity Longitudinal Barriers and Bridge Rails BarrierGate®
CC-78E NCHRP 350 Trinity Barrier Terminals and Crash Cushions SST TMA Modification
CC-104B NCHRP 350 Trinity Barrier Terminals and Crash Cushions Vorteq® Truck Mounted Attenuator (TMA) Modification
CC-57 NCHRP 350 J.M.Essex, EASI Barrier Terminals and Crash Cushions QuadGuard Elite (various widths) @ TL-3
CC-35M NCHRP 350 Trinity Barrier Terminals and Crash Cushions QuadGuard System Modification
WZ-56A NCHRP 350 Eastern Metal of Elmira, Incl Work Zone Devices C-601 Sign Stand
SS-67A NCHRP 350 Franklin Industries Co. Sign Supports, Mailboxes, and Delineator Posts Franklin Base Bolted Sign Support
CC-35L NCHRP 350 Trinity Highway Products Barrier Terminals and Crash Cushions QuadGuard System modification
CC-34C NCHRP 350 Trinity Highway Products Barrier Terminals and Crash Cushions MPS-350X TMA Modification
CC-57E NCHRP 350 Trinity Barrier Terminals and Crash Cushions QuadGuard® Elite System Modification