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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-157 NCHRP 350 Trinity Highway Products Longitudinal Barriers and Bridge Rails CASS TL-4 Cable Barrier system & terminal
WZ-232 NCHRP 350 Davidson Plastics Corp Work Zone Devices X-Tube on a 40# Portable Rubber Base
WZ-231 NCHRP 350 Davidson Plastics Corp Work Zone Devices FG 300 EFX Channelizer on low profile rubber base
WZ-254 NCHRP 350 Alucobest Work Zone Devices Aluminum laminate substrate -- 2 mm and 3 mm
CC-98 NCHRP 350 Armorflex Barrier Terminals and Crash Cushions Armorwire Terminal End for cable barriers
SS-134A NCHRP 350 Xcessories Squared Sign Supports, Mailboxes, and Delineator Posts Addendum that modifies the slip base receiver
SS-147 NCHRP 350 Wright County, MN Sign Supports, Mailboxes, and Delineator Posts Generic U-channel sign post attached to PSST sign support.
LS-60 NCHRP 350 Seco Signal Equipment Co. Luminaire Supports Seco South System designed to safely disconnect and de-energize power supply.
WZ-229 NCHRP 350 Davidson Plastics Corp Work Zone Devices Poly-Kade Type I Barricade and Type II Barricades
B-156 NCHRP 350 Gregory Industries Inc. Longitudinal Barriers and Bridge Rails GMS-TB Guardrail System