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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-41 NCHRP 350 United Rentals Highway Technologies Work Zone Devices Type I and Type II Barricades
WZ-42 NCHRP 350 Cogent Enterprises, Inc. Work Zone Devices Cordonator tm
WZ-33 NCHRP 350 Three D Traffic Works, Inc. Work Zone Devices TD2000 Works Barricade
WZ-25 NCHRP 350 Dickie Tool Company Work Zone Devices Portable Sign Stands
WZ-36 NCHRP 350 Protection Services, Inc. Work Zone Devices Type II Barricade
B-56A NCHRP 350 Structures Of Ironwood, L.L.C. Longitudinal Barriers and Bridge Rails IRONWOOD Guidrail
CC-66 NCHRP 350 Barrier Systems Inc. Barrier Terminals and Crash Cushions ABSORB 350 crash cushion @ TL-3
B-68 NCHRP 350 CAMMCO, Inc. Longitudinal Barriers and Bridge Rails CAMMCO Plastic Guardrail Blockout
CC-12I NCHRP 350 Trinity Industries, Inc. Barrier Terminals and Crash Cushions ET-2000 Plus Guardrail Terminal @ TL-3
WZ-30 NCHRP 350 Sign Up Corporation Work Zone Devices MS-1000 & MS-5000 Portable Sign Stands