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Colorado Class R Knowledge Practice Test
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Safe & Responsible DrivingStandalone practice
For a Colorado driver under 21, which BAC range defines the underage drinking-and-driving offense (UDD)?
Correct answer: At least 0.02% and not more than 0.05%.
Why
The UDD range is a BAC of at least 0.02% and not more than 0.05%, inclusive. Higher readings are not lawful for an underage driver; other alcohol and impairment provisions apply. Even a low reading does not excuse impaired driving.
Verified against Colorado Driver Handbook · Under-21 BAC threshold · p. 6
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