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Difficulty: EasyBlood Alcohol Concentration (BAC) Limits and Thresholds

In standard traffic safety law, at what minimum Blood Alcohol Concentration (BAC) level is a driver aged 21 or older considered legally impaired while operating a personal passenger car?

  1. 0.08%Answer
  2. B
    0.04%
  3. C
    0.02%
  4. D
    0.10%

Answer

A Blood Alcohol Concentration (BAC) of 0.08% is the legal threshold at which an adult driver operating a personal passenger vehicle is considered impaired per se.
For adult drivers aged 21 and older operating non-commercial personal vehicles, the legal statutory limit for Blood Alcohol Concentration (BAC) is 0.08%. Driving with a BAC at or above this threshold is per se illegal across standard traffic laws.

Step-by-Step Solution

1
Identify the driver classification and vehicle type
The scenario describes an adult driver aged 21 or older driving a personal passenger vehicle.
Statutory BAC limits vary depending on driver age and whether the vehicle is commercial or non-commercial.
2
Apply the statutory BAC threshold rule
The standard legal BAC limit for adult non-commercial drivers is 0.08%.
Operating a non-commercial motor vehicle with a BAC of 0.08% or higher constitutes driving under the influence (DUI per se).

Key Concept

Blood Alcohol Concentration (BAC) legal limits for adult non-commercial drivers
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Topics

Blood Alcohol Concentration (BAC) Limits and Thresholds

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