### Question
How does the law define motorcycle?


### Answer
Under *23 U.S.C. § 153*, **motorcycle** is defined as:

> a motor vehicle which is designed to travel on not more than 3 wheels in contact with the surface

#### Citation:
  - *23 U.S.C. § 153*
  - Heading: **CHAPTER 1-FEDERAL-AID HIGHWAYS**

