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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
LS-78 NCHRP 350 Main Street Lighting Luminaire Supports Fiberglass light pole 12.75 foot height
LS-76 NCHRP 350 HAPCO Luminaire Supports HAPCO 67238A Coupling with 2” washers
WZ-303A NCHRP 350 Eastern Metal/USA-Sign Work Zone Devices C-301, C-801, and C-802 Sign Stands
WZ-316 NCHRP 350 MDI Traffic Control Products Work Zone Devices MDI 4812KC-60 X-Footprint Portable Sign Stand
WZ-320 NCHRP 350 MDI Traffic Control Products Work Zone Devices MDI 5012SSALPT X-Footprint Portable Sign Stand
WZ-319 NCHRP 350 Accuform Work Zone Devices FRC786 Tilt Adjust Stand - Spring Version, X-Footprint Portable Sign Stand
CC-100A NCHRP 350 Trinity Highway Products Barrier Terminals and Crash Cushions Slotted Rail Terminal (SRT-31) used for terminating Trinity Guardrail System (TGS)
B-235 NCHRP 350 CalTrans Longitudinal Barriers and Bridge Rails Caltrans Low Profile Reinforced Concrete Barrier
SS-131A NCHRP 350 Xcessories Squared Sign Supports, Mailboxes, and Delineator Posts Keen Break Coupler
SS-175 NCHRP 350 Xcessories Squared Sign Supports, Mailboxes, and Delineator Posts Surface Mount Slip Bases SMSB10-10-G and SMSB8-10-G