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Question:

In which of the following circumstances should you make use of your vehicle's horn?

Answer: When using the horn may help you avoid an accident, by calling attention

Explanation
Your horn may be a wise option to help you avoid an accident by letting others know exactly where you are if they didn't see your truck and are about to move into your space.
This question is in Section 1: General Knowledge of our CDL Test Guide. Explore now!
Related Question

Question: If you are drowsy, what action should you take before driving farther?

Pull off the road and get some sleep.

You cannot make drowsiness disappear by drinking coffee or other caffeinated beverages or by getting fresh air. They may make you feel more alert momentarily, but the only real solution is to get off the road and get some rest.

Question: Which of these statements about driving in areas with strong wind is true?

1. You should drive alongside other vehicles to help break up the wind.

2. The lighter your vehicle, the less trouble you will have with the wind.

3. Winds are especially a problem when coming out of tunnels.

Winds are especially a problem when coming out of tunnels.

Question: There are two types of jackknife; they are:

Both trailer and tractor.

Question: How long does it take a typical tractor-trailer to clear a single railroad track? A double railroad track?

It takes 14 seconds to clear a single track and more than 15 seconds to clear a double track.

Question: Converter dollies:

Often do not have spring brakes.

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