Blood alcohol concentration
Also known as: BAC, blood alcohol content, breath alcohol concentration, alcohol concentration
The percentage of alcohol in a person's blood, measured by breath, blood, or urine test. A BAC of 0.08 percent is the per se DUI limit for most drivers age 21 and over, with lower limits for commercial drivers and drivers under 21.
Where you'll see blood alcohol concentration on this site
Pages that reference this term so you can see it in context.
Practice questions
- Your license is restored for the first time after a DWI suspension. The DWI was not in a c... · North Carolina practice question
- You are driving your personal car in North Carolina. What blood alcohol concentration trig... · North Carolina practice question
- You hold a commercial driver license and are driving a commercial motor vehicle in North C... · North Carolina practice question
- According to the manual, driving while impaired can be proven in which of the following wa... · North Carolina practice question
- New York classifies driving with which blood alcohol content (BAC) as Aggravated Driving W... · New York practice question
Frequently asked questions
- What is the BAC limit for drivers under 21 in Nevada? · Nevada FAQ
- What is the BAC limit for drivers under 21 in Oregon? · Oregon FAQ
- What is the BAC limit for drivers under 21 in Pennsylvania? · Pennsylvania FAQ
- What is the BAC limit for drivers under 21 in Illinois? · Illinois FAQ
- What is the BAC limit for drivers under 21 in Florida? · Florida FAQ
Articles
- How to Pass the North Carolina Knowledge Test on Your First Try · North Carolina article
- How to Pass the Nevada DMV Knowledge Test on Your First Try · Nevada article
Studying for your test?
Pick your state for free practice questions, study guides, and a road-signs reference.