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Difficulty: EasyBlood Alcohol Concentration (BAC) Limits and Thresholds

For non-commercial drivers who are 21 years of age or older, at what Blood Alcohol Concentration (BAC) level is it illegal to operate a motor vehicle?

  1. 0.08%0.08\%Answer
  2. B
    0.04%0.04\%
  3. C
    0.01%0.01\%
  4. D
    0.10%0.10\%

Answer

0.08%0.08\%
In standard motor vehicle regulations, a non-commercial driver aged 21 or older is considered legally impaired per se when their Blood Alcohol Concentration (BAC) reaches or exceeds 0.08%0.08\%.

Step-by-Step Solution

1
Identify the driver classification and age category in the question.
The driver is a non-commercial operator aged 21 years or older.
Statutory BAC limits vary based on vehicle type and driver age.
2
Recall the legal BAC threshold for standard adult drivers.
Operating a vehicle with a BAC of 0.08%0.08\% or higher constitutes illegal impairment per se.
Under standard traffic safety laws, 0.08%0.08\% is the established legal limit for adult drivers.

Key Concept

Standard Adult Blood Alcohol Concentration (BAC) Legal Limit
Estimated Time:30s
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Topics

Blood Alcohol Concentration (BAC) Limits and Thresholds

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