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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-67 NCHRP 350 Bone Safety Signs Work Zone Devices Portable Sign Stands with 48x48 RollUps
WZ-60 NCHRP 350 United Rentals Jadco Work Zone Devices Type II Barricade with lightweight light
WZ-103 NCHRP 350 Eastern Metal / USA Sign Work Zone Devices Additional signs on tested stands
WZ-65 NCHRP 350 American Fence Work Zone Devices Rubber Ballast for Type III Barricade
B-75 NCHRP 350 Kaddo Kothman, Road Systems, Inc. Longitudinal Barriers and Bridge Rails 14-gauge W-beam Guardrail @ TL-3
WZ-64 NCHRP 350 Sierra Safety Work Zone Devices "Quick Stand" Temporary Ground Mount Sign Supports
SS-68F NCHRP 350 Xcessories Squared Sign Supports, Mailboxes, and Delineator Posts Modification to 3-bolt base
B-34D NCHRP 350 Sam Arnold, Guardian Safety Barrier Longitudinal Barriers and Bridge Rails Clarification of Guardian Status
WZ-55 NCHRP 350 Craig Mittlestadt, Minnesota DOT Work Zone Devices Type III Barricade perforated square steel tube. Type III Barricade with sign (no lights on either)
B-79 NCHRP 350 Gary L. Hoffman, Pennsylvania DOT Longitudinal Barriers and Bridge Rails 12.5' F-shape temporary barrier (w/ plate connection) @ TL-3