Large trucks are likely to lose speed when:
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Beginning a downward grade.
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Climbing a steep hill.
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Driving behind a passenger car.
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All of the above.
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Explanation
Large trucks often lose speed when climbing steep hills, grades, or mountain roads due to their heavy load. This can make it easier to pass them on an incline. However, the same vehicle may quickly gain speed when going downhill, which could make passing more difficult. Always be alert to how the terrain affects large vehicles. If you're stopped behind a truck on an uphill grade, leave extra space - trucks may roll back slightly when they begin moving. Give them the space they need to operate safely.
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🟡 This question is moderately difficult — 26.1% of our users answer it incorrectly.
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This question appears in the following DMV practice tests:
Maine DMV Practice Test 1Arkansas DMV Practice Test 5South Carolina DMV Practice Test 6Mississippi DMV Practice Test 7South Dakota DMV Practice Test 8Delaware DMV Practice Test 11Wisconsin DMV Practice Test 15Pennsylvania DMV Practice Test 16Missouri DMV Practice Test 18Connecticut DMV Practice Test 18