RRoad Rules Prep

Hawaii Impairment practice

Practice 45 Hawaii DMV questions on impairment. Answer interactively below with an instant explanation after every question.

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Example questions & answers

1

Which of the following is not a likely effect of marijuana on your driving?

  • A.Reduced ability to focus
  • B.Faster reaction time✓
  • C.Impaired night vision
  • D.Impaired sense of time, speed, and distance

Why: Marijuana acts as a depressant on the central nervous system, which slows down your physical and mental responses. Therefore, it causes slower reaction times, not faster ones.

2

Which drug is the second most frequently found in drivers involved in accidents, following alcohol?

  • A.cocaine.
  • B.cold or allergy medications.
  • C.marijuana.✓
  • D.pain relievers.

Why: According to traffic safety statistics and the driver's manual, marijuana is the second most common drug found in the bodies of drivers involved in accidents, right after alcohol. While many drugs interfere with driving, marijuana is the most prevalent illegal substance detected.

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Practice material only — verify current rules with the Hawaii Division of Motor Vehicle Licensing.