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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
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-227 NCHRP 350 Davidson Plastics Corp Work Zone Devices FG 300 post mounted to Qwik Curb 
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
WZ-228 NCHRP 350 Davidson Plastics Corp Work Zone Devices Steel-Kade Type I Barricade and Type II Barricades
CC-65B NCHRP 350 TrafFix Devices, Inc Barrier Terminals and Crash Cushions Trailer TMA
WZ-230 NCHRP 350 Davidson Plastics Corp. Work Zone Devices Portable Sign Stand, Vertical Panel
SS-146 NCHRP 350 Designovations Sign Supports, Mailboxes, and Delineator Posts Snap N Safe round coupler
B-155 NCHRP 350 Corpacero Longitudinal Barriers and Bridge Rails HDPE Spacer Block, TL-3