Hazards

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Commercial Driver's License (General Knowledge) › Hazards

Questions 1 - 4
1

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

The passage of time

Drinking several glasses of water

Drinking one cup of coffee per serving of alcohol you consume

Taking a brisk walk

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.

2

Which of the following is the most common cause of tire fires?

Tires that are insufficiently inflated

Tires that are over-inflated

Tires that are made with a deficient grade of rubber

None of these

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.

3

Which of the following is the most common cause of tire fires?

Tires that are insufficiently inflated

Tires that are over-inflated

Tires that are made with a deficient grade of rubber

None of these

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.

4

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

The passage of time

Drinking several glasses of water

Drinking one cup of coffee per serving of alcohol you consume

Taking a brisk walk

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.