### Question
Can you define what clean school bus means?


### Answer
**Clean school bus** is defined as the following in *42 U.S.C. § 16091a*:

> a school bus with a gross vehicle weight of greater than 14,000 pounds that—


(A) is powered by a heavy duty engine

#### Citation:
  - *42 U.S.C. § 16091a*
  - Heading: **CHAPTER 149-ENERGY POLICY, 2005 > SUBCHAPTER VII-VEHICLES AND FUELS > Part C-Clean School Buses**

