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Tennessee Class D Knowledge Test Practice
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Passing target: 80% (32/40)
Observation, Speed & SpaceStandalone practice
Defensive drivers scan well ahead so that they see problems early. In city driving, about how far ahead should you focus your eyes?
Blue A travels along a city street; no scan-distance target appears.
Correct answer: About 10 to 15 seconds ahead, about one city block
Why
Looking 10 to 15 seconds ahead gives you time to spot brake lights, turning cars, children and signals before you reach them. Keep your eyes moving rather than staring at one point, and check your mirrors about every 10 seconds. At interstate speeds, look even farther ahead.
Verified against Tennessee Comprehensive Driver License Manual · Scanning the Road — How far ahead to look · p. 107
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