### Question
How does the law define categorical exclusion?


### Answer
Under *23 U.S.C. § 157*, **categorical exclusion** is defined as:

> given the term in section 771.117(c) of title 23, Code of Federal Regulations (or a successor regulation).

#### Citation:
  - *23 U.S.C. § 157*
  - Heading: **CHAPTER 1-FEDERAL-AID HIGHWAYS**

