On November 12, 2015, FHWA issued a memorandum indicating that all modifications to NCHRP 350-tested devices will require testing under MASH in order to receive a Federal-aid eligibility letter from FHWA. In addition, a Federal Register Notice was also issued regarding this action. This has provided a significant step toward the implementation of MASH.
December 31, 2017
W-Beam Barriers and cast-in-place Concrete Barriers.
June 30, 2018
December 31, 2018
Cable Barriers, Cable Barrier Terminals, and Crash Cushions
December 31, 2019
Bridge Rails, Transitions, All other Longitudinal Barriers (including portable barriers install permanently), all other Terminals, Sign Supports, and all other breakaway hardware