### Question
Can you define what security interest means?


### Answer
**Security interest** is defined as the following in *49 U.S.C. § 14301*:

> 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

#### Citation:
  - *49 U.S.C. § 14301*
  - Heading: **SUBTITLE IV-INTERSTATE TRANSPORTATION > PART B-MOTOR CARRIERS, WATER CARRIERS, BROKERS, AND FREIGHT FORWARDERS > CHAPTER 143-FINANCE**

