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Difficulty: MediumBlood Alcohol Concentration (BAC) Limits and Thresholds

During a traffic safety inspection, a 30-year-old motorist driving a standard passenger car submits to a breath test. Under standard driver licensing laws, at what minimum Blood Alcohol Concentration (BAC) level is an adult non-commercial driver legally presumed to be impaired per se?

  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

The statutory per se limit for adult non-commercial drivers aged 21 and older is 0.08%0.08\% BAC.
For non-commercial drivers who are 21 years of age or older, operating a vehicle with a Blood Alcohol Concentration (BAC) of 0.08%0.08\% or higher constitutes per se driving under the influence under standard motor vehicle laws.

Step-by-Step Solution

1
Identify driver category and age group from the stem.
The driver is 30 years old (adult) and operating a standard non-commercial vehicle.
Statutory BAC limits vary depending on age and commercial vehicle classification.
2
Recall the legal statutory BAC threshold for adult non-commercial drivers.
The statutory limit is 0.08%0.08\% BAC.
At or above 0.08%0.08\% BAC, a driver is legally presumed impaired per se under standard traffic regulations.

Key Concept

Statutory Blood Alcohol Concentration (BAC) per se limits for adult non-commercial drivers
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Topics

Blood Alcohol Concentration (BAC) Limits and Thresholds

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