California DMV Permit Test (Class C)Alcohol and DrugsMedium
A driver has been drinking alcohol at a party. They feel relatively sober and believe they can drive home safely. Which of the following statements about their perception of impairment is most accurate?
- ATheir judgment is likely impaired, leading to an overestimation of their driving ability.
- BAlcohol primarily affects physical coordination, leaving judgment unimpaired.
- CTheir feeling of sobriety is a reliable indicator of their actual driving ability.
- DCoffee or a cold shower will quickly reduce their BAC and restore full driving ability.
Show answer & explanationAnswer & explanation
Correct answer: A. Their judgment is likely impaired, leading to an overestimation of their driving ability.
Alcohol impairs judgment and decision-making long before significant physical signs of intoxication appear. This often leads to an overconfidence in one's ability to drive, even when legally and functionally impaired.
Why the other options are wrong
- B. Alcohol impairs both physical coordination and cognitive functions, including judgment and reaction time.
- C. A person's subjective feeling of sobriety is highly unreliable due to alcohol's effect on judgment.
- D. Only time can reduce BAC; coffee or cold showers may make a person feel more alert but do not affect alcohol metabolism or BAC.
Alcohol's Effect on Judgment
Alcohol significantly impairs a driver's judgment and decision-making abilities, often causing them to overestimate their capacity to drive safely.
- Judgment is one of the first abilities impaired by alcohol.
- Leads to increased risk-taking and overconfidence.
- Impairs the ability to accurately assess one's own impairment.
Memory trick: Alcohol clouds the mind, making bad choices seem fine.