### Question
What does heavy-duty truck mean?


### Answer
**Heavy-duty truck** has the following meaning in *42 U.S.C. § 16131*:

> given the term “heavy duty vehicle” in section 7521 of this title.

#### Citation:
  - *42 U.S.C. § 16131*
  - Heading: **CHAPTER 149-ENERGY POLICY, 2005 > SUBCHAPTER VII-VEHICLES AND FUELS > Part F-Diesel Emissions Reduction**

