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Difficulty: MediumLegal Consequences, Suspensions, and DUI Penalties

A 24-year-old driver operating a personal passenger vehicle is lawfully stopped by law enforcement and registers a Blood Alcohol Concentration (BAC) of 0.05%0.05\%. If the driver exhibits no signs of physical impairment and has no prior driving record violations, which statement accurately describes the legal position regarding adult BAC thresholds and driving under the influence laws?

  1. A
    The driver is subject to an automatic Zero Tolerance license suspension because any detectable alcohol level constitutes an illegal BAC limit for adult drivers.
  2. The driver is below the statutory adult per se BAC limit of 0.08%0.08\%, meaning a BAC of 0.05%0.05\% alone does not establish a per se DUI violation for an adult operating a non-commercial vehicle.Answer
  3. C
    The driver automatically forfeits their license under Implied Consent statutes simply for agreeing to take the chemical breath test.
  4. D
    The driver violates the standard adult per se limit because non-commercial drivers are subject to a maximum legal limit of 0.04%0.04\% BAC.

Answer

The driver is below the statutory adult per se BAC limit of 0.08%0.08\%, meaning a BAC of 0.05%0.05\% alone does not establish a per se DUI violation for an adult operating a non-commercial vehicle.
For non-commercial drivers aged 21 and older, traffic safety law establishes a statutory per se Blood Alcohol Concentration limit of 0.08%0.08\%. Because 0.05%0.05\% is below this 0.08%0.08\% threshold, the driver does not trigger an automatic per se DUI violation based solely on their test result.

Step-by-Step Solution

1
Identify driver demographic and vehicle classification
Driver is 24 years old (adult) operating a personal passenger vehicle (non-commercial).
Statutory BAC limits vary depending on age (under 21 vs 21+) and vehicle class (commercial vs non-commercial).
2
Apply the corresponding statutory per se BAC limit
The statutory per se BAC limit for adult non-commercial drivers is 0.08%0.08\%.
Zero tolerance (0.01%−0.02%0.01\% - 0.02\%) applies to underage drivers, and 0.04%0.04\% applies to commercial license holders operating commercial vehicles.
3
Compare recorded BAC (0.05%0.05\%) to statutory per se threshold (0.08%0.08\%)
0.05%<0.08%0.05\% < 0.08\%, confirming the BAC is below the per se limit.
A per se DUI charge requires meeting or exceeding the statutory numerical limit established by law.

Key Concept

Adult Statutory BAC Thresholds vs Special Category Limits
Estimated Time:1m 15s
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Topics

Legal Consequences, Suspensions, and DUI Penalties

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