Parts and Accessories Necessary for Safe Operation; Application for Exemption Renewal From Charles Machine Works, Inc.

Official abstract: FMCSA withdraws its January 16, 2026, notice that requested public comment on an application from Charles Machine Works, Inc. (CMW) seeking renewal of a five-year exemption from the Agency's prohibition against the use of gravity-fed or siphon-fed fuel systems on commercial motor vehicles (CMVs). FMCSA has determined that the Agency's February 19, 2026, final rule titled "Parts and Accessories Necessary for Safe Operation; Auxiliary Fuel Tanks," provided the requested relief by amending the relevant regulation in a way that resolves the concerns outlined in CMW's original exemption request. Consequently, the exemption is now unnecessary, not only for CMW but also for any other entities that might have planned to request an exemption from the prohibition on gravity-fed or siphon-fed fuel systems on CMVs.