Driver's License Test Prep
Pennsylvania Practice DUI & Impaired Driving

You are 25 years old. According to the manual, at what blood alcohol level are you considered to be driving under the influence in Pennsylvania?

  1. A.
    .05 or higher
  2. B.
    .08 or higher Correct
  3. C.
    .10 or higher
  4. D.
    .02 or higher
The Why

The answer is ".08 or higher"

For a driver of legal drinking age, Pennsylvania's DUI threshold is a BAC of .08 or higher, and lower BACs can still support a DUI charge if driving is erratic. Test-takers who pick .02 are recalling the under-21 zero-tolerance number from the next page, and those who pick .10 are reaching for the High Rate tier threshold from Table 2.

Why the others miss

The traps in the wrong answers

A. .05 or higher

The .05 figure is the impairment equivalent of being awake 18 hours, not the DUI threshold. This answer pulls a number from the fatigue-comparison discussion and treats it as the DUI limit.

C. .10 or higher

The .10 figure appears in the manual as the boundary for the High Rate tier, not as the general DUI threshold. This answer anchors on .10 as the common shorthand for 'drunk' and treats it as Pennsylvania's cutoff for adults.

D. .02 or higher

The .02 threshold is the Zero Tolerance level for drivers under 21, not the adult limit. This answer skips the age cue in the question and defaults to the strictest BAC number the manual mentions.

The Rule

This question tests your knowledge of DUI & Impaired Driving in Pennsylvania. Source: Pennsylvania Driver Manual, "WHAT CONSTITUTES A DUI (DRIVING UNDER THE INFLUENCE)?," p.81..

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