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Iowa Class C Knowledge Test Practice
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Safe & Responsible DrivingStandalone practice
For an ordinary adult driver, at what starting blood alcohol concentration (BAC) does Iowa’s per-se OWI rule apply, even without separate proof of visible impairment?
Correct answer: 0.08%.
Why
A blood alcohol concentration of 0.08% or more is one independent basis for OWI. Operating under the influence of alcohol, another drug or their combination is another; the controlled-substance provision has specific prescription qualifications. A BAC below 0.08% is not a safe-driving allowance. Do not drive after consuming a substance that impairs your ability.
Verified against Iowa Driver's License Manual · Operating While Intoxicated · p. 37
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