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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
WZ-167A NCHRP 350 Ply-Glo Safety Devices Work Zone Devices Illuminated Road Tubes
WZ-256 NCHRP 350 C-Bond Work Zone Devices Aluminum laminate substrate -- 2 mm and 3 mm
B-160 NCHRP 350 Barrier Systems Longitudinal Barriers and Bridge Rails BarrierGuard 800 (Variable Length Barrier)
B-159 NCHRP 350 Barrier Systems Longitudinal Barriers and Bridge Rails BarrierGuard 800 (Gate of Hwy. Care)
CC-87C NCHRP 350 Energy Absorption Systems, Inc. Barrier Terminals and Crash Cushions QUEST 115 system
B-85E NCHRP 350 Trinity Highway Products Longitudinal Barriers and Bridge Rails Modified King Block
B-158 NCHRP 350 Barrier Systems Longitudinal Barriers and Bridge Rails BarrierGuard 800 (minimum deflection system)
SS-148 NCHRP 350 Minnesota DOT Sign Supports, Mailboxes, and Delineator Posts Mailbox Support
SS-135 NCHRP 350 All Traffic Solution Sign Supports, Mailboxes, and Delineator Posts Radar Speed Display on a Slip Base Support
WZ-255 NCHRP 350 Trident Security Devices, Inc. Work Zone Devices ROADGUARD/2 Longitudinal Channelizer