Car permit · Alcohol and drugs
At what blood alcohol concentration (BAC) does it become illegal to drive?
Correct answer: 0.08% for drivers age 21 and older.
Answer options
- A0.06% for drivers age 21 and older
- B0.08% for all drivers age 18 and older
- C0.08% for drivers age 21 and older Correct
Why
For drivers 21 and older, the standard legal limit is a BAC of 0.08%. Drivers under 21 are covered by zero-tolerance laws with a far lower limit, so 0.08% is not the cutoff for 18- to 20-year-olds, and 0.06% is not the standard adult limit.
Tip Watch the decimal point closely: the adult limit is 0.08% BAC, not 0.8%.
About this question
Topic: Alcohol and drugs License: Car permit
Part of these practice sets:
- Alaska: Laws & Licensing
- Alabama: State Practice Set
- Arkansas: State Practice Set
- Arizona: Laws & Licensing
- California: Laws & Licensing
- Colorado: State Practice Set
- Connecticut: State Practice Set
- District of Columbia: State Practice Set
- Delaware: Laws & Licensing
- Florida: Laws & Licensing
- Georgia: State Practice Set
- Hawaii: Laws & Licensing
- Iowa: Laws & Licensing
- Idaho: Laws & Licensing
- Illinois: Laws & Licensing
- Indiana: State Practice Set
- Kansas: Laws & Licensing
- Kentucky: State Practice Set
- Minnesota: Laws & Licensing
- New Hampshire: Laws & Licensing
- New Jersey: Laws & Licensing
- New Mexico: Laws & Licensing
- Puerto Rico: State Practice Set
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This question is part of Laws & Licensing (14 questions). Take the full set and check your score.
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