Parts and Accessories Necessary for Safe Operation; Auxiliary Fuel Tanks
motor-carrier · Federal Motor Carrier Safety Administration · Published 2026-02-19 · Effective 2026-03-23 · 91 FR 7890
Document
Document number
2026-03257
Federal Register citation
91 FR 7890
CFR reference
49 CFR 393
Type
Rule
Action
Final rule.
Category
motor-carrier
Sub-agency
Federal Motor Carrier Safety Administration
Publication date
2026-02-19
Effective date
2026-03-23
DOT docket
Docket No. FMCSA-2025-0120
Abstract
FMCSA amends its fuel tank requirements to add an exception to the prohibition on gravity and syphon feeds for auxiliary pumps with a nominal fuel tank capacity of not more than five gallons mounted on the trailer chassis frame or trailer bed, for purposes other than operation of the motor vehicle, that are operated only when the motor vehicle is not in motion. This revision responds to a petition for rulemaking from the Truck Trailer Manufacturers Association (TTMA). The revision provides relief from a regulatory requirement without impacting safety.