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

In Nevada, what is the illegal per se blood alcohol concentration for a non-commercial driver 21 or older?

  1. A.
    0.02%
  2. B.
    0.08% Correct
  3. C.
    0.05%
  4. D.
    0.10%
The Why

The answer is "0.08%"

The manual's Illegal Per Se Law names 0.08% as the concentration that triggers automatic revocation for a non-commercial driver 21 or older. Under-21 drivers face a much lower 0.02% threshold, and commercial drivers face 0.04%.

Why the others miss

The traps in the wrong answers

A. 0.02%

This is the under-21 chemical-test threshold in the manual, not the adult illegal per se limit. This answer pulls in the young-driver zero-tolerance figure that sits one paragraph above in the same chapter, applied when the age qualifier in the question is skimmed past.

C. 0.05%

Splits the difference between under-21 and adult thresholds, which the manual does not use. This answer reaches for a middle value between 0.02% and 0.08%, on the belief that the real limit must sit between the young-driver and adult rules.

D. 0.10%

The manual sets the limit at 0.08%, not the higher figure some drivers recall from older laws. This answer repeats the 0.10% adult limit many drivers memorized before states dropped the threshold to 0.08%.

The Rule

This question tests your knowledge of DUI & Impaired Driving in Nevada. Source: Nevada Driver Manual, "Chapter 10 - Driving Under the Influence, Illegal Per Se Law," p.79..

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