49 U.S.C. § 14301: Security interests in certain motor vehicles

The term “motor vehicle” means a truck of rated capacity (gross vehicle weight) of at least 10,000 pounds, a highway tractor of rated capacity (gross combination weight) of at least 10,000 pounds, a property-carrying trailer or semitrailer with at least one load-carrying axle of at least 10,000 pounds, or a motor bus with a seating capacity of at least 10 individuals. The term “lien creditor” means a creditor having a lien on a motor vehicle and includes an assignee for benefit of creditors from the date of assignment, a trustee in a case under title 11 from the date of filing of the petition in that case, and a receiver in equity from the date of appointment of the receiver. The term “security interest” means an interest (including an interest established by a conditional sales contract, mortgage, equipment trust, or other lien or title retention contract, or lease) in a motor vehicle when the interest secures payment or performance of an obligation. The term “perfection”, as related to a security interest, means taking action (including public filing, recording, notation on a certificate of title, and possession of collateral by the secured party), or the existence of facts, required under law to make a security interest enforceable against general creditors and subsequent lien creditors of a debtor, but does not include compliance with requirements related only to the establishment of a valid security interest between the debtor and the secured party. a certificate of title is issued for a motor vehicle under a law of a jurisdiction that requires or permits indication, on a certificate or title, of a security interest in the motor vehicle if the security interest is indicated on the certificate; a certificate of title has not been issued and the law of the State where the principal place of business of that carrier is located requires or permits public filing or recording of, or in relation to, that security interest if there has been such a public filing or recording; and a certificate of title has not been issued and the security interest cannot be perfected under paragraph (2) of this subsection, if the security interest has been perfected under the law (including the conflict of laws rules) of the State where the principal place of business of that carrier is located.