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Michigan Operator Knowledge Test Practice
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Passing target: 8 correct signs and 24 correct rules (TLA practice targets)
Weather, Visibility & EmergenciesStandalone practice
Rain has just started after a dry period. Why should you be especially cautious during the early rain?
Correct answer: Oil deposits have not yet washed away and can make the surface very slippery.
Why
The handbook says roads can be most slippery during the first half hour of rain because deposited oil has not yet washed away. Be especially cautious at intersections where deposits may be heavier. Slow down and leave at least twice the normal following distance under this guidance.
Verified against What Every Driver Must Know and cited current authority · Early rain hazards · p. 76
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