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Tennessee Class D Knowledge Test Practice
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Safe & Responsible DrivingStandalone practice
After two drinks, Alex says: "I'm fine to drive. I can walk a straight line, and I'm not slurring my words." Which ability does alcohol affect first, and what does that mean for Alex?
Correct answer: Judgment, so he may not notice how impaired he already is.
Why
Judgment and vision are the two abilities most important for driving, and even small amounts of alcohol affect both. After only one drink, your ability to judge speed, time and distance changes, and people who have been drinking take risks such as speeding or passing without enough room. Never rely on how you feel to decide whether you can drive after drinking.
Verified against Tennessee Comprehensive Driver License Manual · Alcohol's Effects on Driving Ability — Judgment · p. 97, 94
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