Free CDL Quiz

In foggy conditions, what should you do?

a.Use high beam headlights for maximum visibility
b.Use low beam headlights, reduce speed, and increase following distance
c.Maintain normal speed and use hazard flashers
d.Pull over and wait for the fog to clear in all cases

Explanation

In fog, you should use low beam headlights (high beams reflect off fog and reduce visibility), significantly reduce speed, and increase your following distance. If visibility becomes too poor, pull over to a safe location.

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About the CDL Exam

The CDL (Commercial Driver License) exam tests your knowledge of commercial driving rules, safety procedures, and vehicle operation. You must score 80% or higher to pass the written knowledge test. The exam covers general knowledge, air brakes, combination vehicles, and various endorsements.

This question is from the Class A CDL Knowledge Test #1 section. Practice with more questions from this category to build confidence before taking the official DMV test.

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