---
kind: "section"
citation: "23 C.F.R. § 1210.3"
title: "23"
number: "1210.3"
heading: "Definitions."
url: "https://uscodex.org/cfr/23/1210.3"
---

# §1210.3. Definitions.


As used in this part:

- (a) Alcohol concentration means either grams of alcohol per 100 milliliters of blood or grams of alcohol per 210 liters of breath.
- (b) BAC means either blood or breath alcohol concentration.
- (c) Operating a motor vehicle means driving or being in actual physical control of a motor vehicle.

## Notes

### Authority

Authority: 23 U.S.C. 161; delegation of authority at 49 CFR 1.48 and 1.50.

### Source

Source: 61 FR 55217, Oct. 25, 1996, unless otherwise noted.