### Question
What does primary offense mean?


### Answer
**Primary offense** has the following meaning in *23 U.S.C. § 405*:

> an offense for which a law enforcement officer may stop a vehicle solely for the purpose of issuing a citation in the absence of evidence of another offense

#### Citation:
  - *23 U.S.C. § 405*
  - Heading: **CHAPTER 4-HIGHWAY SAFETY**

