South Dakota Operator License Knowledge Practice Test
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Passing target: 80% (24/30)
You drive at 60 mph in heavy rain and go through a wide pool of water. The steering suddenly feels light, as if the car floats on the water. What should you do with the pedals?
Blue A is over pooled water in heavy rain on a two-way highway. The new card states the given 60 mph speed and suddenly light steering. No pedal action or chosen route appears.
Correct answer: Ease off the accelerator and do not brake hard until the tires grip again
Why
Hydroplaning happens when the tires ride up on standing water and lose contact with the pavement. Worn tires and high speed make it more likely. The best defense is to slow down in rain and near pools of water; if it happens, let the car slow down and look where you want to go.
Verified against South Dakota Driver License Manual · Speed Management: Adjusting to Roadway Conditions · p. 50, 57, 67
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