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Mississippi Class R Knowledge Exam Practice
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Passing target: 24/30 correct (TLA practice target)
Weather, Visibility & EmergenciesStandalone practice
Why should you reduce speed when rain first begins?
Correct answer: Water loosens accumulated dirt and grease, creating an especially slick film.
Why
The first water loosens accumulated dirt and grease and quickly coats the road with a dangerously slick film, so slow down as rain starts. Oil and dirt have had time to accumulate between showers. Early rain mixes them with water, so ease off before a curve or stop and leave more room rather than relying on dry-road grip.
Verified against Mississippi Driver's License Manual · Hazardous Conditions and Emergencies · p. 65
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