### Question
How does the law define transportation fuel?


### Answer
Under *42 U.S.C. § 7545*, **transportation fuel** is defined as:

> fuel for use in motor vehicles, motor vehicle engines, nonroad vehicles, or nonroad engines (except for ocean-going vessels)

#### Citation:
  - *42 U.S.C. § 7545*
  - Heading: **CHAPTER 85-AIR POLLUTION PREVENTION AND CONTROL > SUBCHAPTER II-EMISSION STANDARDS FOR MOVING SOURCES > Part A-Motor Vehicle Emission and Fuel Standards**

