U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
Under 49 U.S.C. 20106,issuance,regulation,or,except,regulation,or; that is not incompatible with a law, regulation, or order of the U.S. Government; and that does not unreasonably burden interstate commerce. For example, under 49 U.S.C. 20106,issuance.205 preempts any State or tribal law, rule, regulation, order or common law requirement covering the same subject matter.