Commercial Drivers License (General Knowledge) : Hazards

Study concepts, example questions & explanations for Commercial Drivers License (General Knowledge)

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Example Questions

Example Question #1 : Hazards

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.

Example Question #1 : Alcohol, Other Drugs, And Driving

Which of the following is the most reliable method for someone who has consumed alcohol to regain sobriety?

Possible Answers:

Drinking several glasses of water

Drinking one cup of coffee per serving of alcohol you consume

The passage of time

Taking a brisk walk

Correct answer:

The passage of time

Explanation:

While some of the other methods may be considered anecdotally useful, BUT in the eyes of the law (and the BAC counter), the only foolproof method of sobering up is simply to wait an appropriate amount of time.

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