CDL GENERAL KNOWLEDGE TEST (MISSOURI) - PRACTICE TEST
21.
Hazardous materials placards are:
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Signs put on top of a vehicle that identify the hazard class of the cargo.
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Signs put on the outside of a vehicle to warn others of hazardous materials.
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Signs put on the outside of a vehicle that identify the hazard class and weight of the vehicle.
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22.
You should use your horn to:
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to let others know you are about to increase your speed.
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to let others know you are about to break.
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to let others know you are there.
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23.
On
a tractor-trailer equipped with a trailer brake hand
valve, the hand valve can be used to:
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prevent movement of cargo.
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keep from rolling back.
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hold compressed air.
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24.
Which of the following statements about backing heavy vehicles is true?
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Back to the right side so that you can see better.
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Always back as quickly as possible.
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You should avoid backing whenever you can.
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25.
When your rear wheels lock up, you may:
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gain better control of the vehicle.
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lose steering control.
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skid, jackknife, or spin
the vehicle.
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26.
Do NOT use water on a _______ fire.
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gasoline
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paper
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cloth
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27.
When an aggressive driver confronts you, you should:
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return gestures and shouts.
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avoid eye contact.
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make eye contact.
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28.
ABS:
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is not available for doubles and triples.
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gives you more control over the vehicle during braking.
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is not required on newer trucks.
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29.
To prevent your vehicle from rolling back when you start you should:
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release the parking brake, then apply enough engine power to keep from rolling back.
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put the transmission in Neutral.
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partly engage the clutch before you take your right foot off the brake.
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30.
The safety valve is usually set to open at:
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200 psi.
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100 psi.
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150 psi.
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