Free CDL Quiz

Which of these is a common cause of vehicle fires?

a.Under-inflated tires and fuel leaks
b.Overinflated tires
c.Using low beam headlights at night
d.Driving with windows open

Explanation

Under-inflated tires can overheat and catch fire, and fuel leaks near hot engine components are a major fire risk. Regular inspections of tires, fuel lines, and electrical systems help prevent vehicle fires.

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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 B 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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