RRoad Rules Prep
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Washington Impairment practice

Practice 64 Washington DMV questions on impairment. Answer interactively below with an instant explanation after every question.

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Example questions & answers

1

In what ways can marijuana affect a driver's performance?

  • A.Sleepiness
  • B.Slower reaction time
  • C.Impaired time and distance estimation
  • D.All of the above✓

Why: Marijuana significantly impairs driving by causing drowsiness, slowing reaction times, and distorting the perception of time and distance.

2

How long can smoking marijuana impair your ability to drive?

  • A.2 hours.
  • B.3 hours.
  • C.4 hours.
  • D.5 hours.✓

Why: Research indicates that smoking marijuana can impair driving performance for as long as five hours. This impairment affects critical skills like reaction time, coordination, and the ability to judge distances.

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Practice material only — verify current rules with the Washington Department of Licensing.