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South Dakota Operator License Knowledge Practice Test
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Passing target: 80% (24/30)
Vehicle Safety, Documents & TowingStandalone practice
Before a long trip, you want to make sure that your brake lights and turn signals work. What is the best way to check them?
Correct answer: Check them from outside the car, or have a helper watch while you use them
Why
Brake lights tell drivers behind you that you are stopping, and turn signals tell others that you will turn. A burned-out bulb takes away that warning, often with no sign inside the car. Also keep the lenses clean, because dirt on a lens can cut its light by half.
Verified against South Dakota Driver License Manual · Vehicle Maintenance: Lights · p. 23, 24
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