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Difficulty: EasyBlood Alcohol Concentration (BAC) Limits and Thresholds

During a roadside safety check, a law enforcement officer measures the breath sample of an adult motorist operating a personal vehicle. What is the minimum Blood Alcohol Concentration (BAC) at which this driver is legally considered intoxicated?

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

Answer

A Blood Alcohol Concentration (BAC) of 0.08%0.08\% or higher constitutes legal intoxication for adult non-commercial drivers.
For adult non-commercial drivers aged 21 and older, driving with a Blood Alcohol Concentration (BAC) of 0.08%0.08\% or higher is illegal in standard traffic safety law.

Step-by-Step Solution

1
Identify the category of the driver in the scenario.
The scenario describes an adult motorist driving a personal (non-commercial) passenger vehicle.
BAC limits vary depending on whether the driver is an adult non-commercial operator, a commercial driver, or an underage driver.
2
Recall the statutory BAC limit for adult non-commercial drivers.
The statutory legal threshold for adult non-commercial drivers aged 21 or older is 0.08%0.08\%.
At or above 0.08%0.08\% BAC, a driver is legally presumed to be impaired and driving under the influence (DUI).

Key Concept

Statutory Blood Alcohol Concentration (BAC) limits for adult drivers
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Topics

Blood Alcohol Concentration (BAC) Limits and Thresholds

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