All Commercial Drivers License (General Knowledge) Resources
Example Questions
Example Question #1 : Fires
Which of the following is the most common cause of tire fires?
Possible Answers:
Tires that are over-inflated
Tires that are made with a deficient grade of rubber
None of these
Tires that are insufficiently inflated
Correct answer:
Tires that are insufficiently inflated
Explanation:
Under-inflated tires are the single most common cause of tire fires, especially for heavy and commercial vehicles. Over-inflated tires, while posing obvious safety concerns, do not pose as great a risk for fires specifically as do under inflated tires.
All Commercial Drivers License (General Knowledge) Resources
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