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South Carolina Class D Knowledge Test Practice
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Weather, Visibility & EmergenciesStandalone practice
At night on a rural highway, you come up behind a slower car and follow it while you wait for a safe place to pass. Your high beams are on. When must you switch to low beams?
A follows slower B in its own lane on a dark two-lane road with high beams on. The question gives no measured gap or selected dimming point.
Correct answer: When you are within 200 feet of the car ahead of you.
Why
The law gives one exception: you may use high beams while you are passing the other vehicle. Low beams are also the correct choice in fog, rain or snow, when the light of high beams reflects back at you. Keep your eyes moving and search beyond your headlights for dark shapes on the road.
Verified against South Carolina Driver's Manual · Night Driving · p. 127
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