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Difficulty: MediumBlood Alcohol Concentration (BAC) Limits and Thresholds

During a routine traffic safety inspection, a 28-year-old motorist driving a personal sedan is tested for alcohol impairment. Under standard traffic laws for adult non-commercial drivers, at what Blood Alcohol Concentration (BAC) threshold is the motorist considered per se legally impaired?

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

Answer

0.08%
For non-commercial drivers aged 21 and older, a Blood Alcohol Concentration (BAC) of 0.08% or higher is the standard per se legal threshold for driving under the influence.

Step-by-Step Solution

1
Identify driver category and vehicle type from the scenario.
The driver is 28 years old (adult) and operating a personal sedan (non-commercial vehicle).
Statutory BAC limits vary depending on age (under 21 vs. 21 and older) and vehicle classification (commercial vs. non-commercial).
2
Determine the statutory per se BAC threshold applicable to adult non-commercial drivers.
The statutory limit is 0.08%.
Standard driver licensing regulations establish 0.08% BAC as the legal limit for adult non-commercial drivers.

Key Concept

Statutory Blood Alcohol Concentration (BAC) Limits for Non-Commercial Adult Drivers
Estimated Time:1m 0s
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Topics

Blood Alcohol Concentration (BAC) Limits and Thresholds

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