CDL GENERAL KNOWLEDGE TEST (WY) - PRACTICE TEST
31.
The Gross Combination Weight (GCW) is:
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the weight of the vehicle, trailer, and cargo.
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the weight of the trailer and cargo.
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the weight of the vehicle and its trailer(s).
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the total weight of a single vehicle including its load.
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32.
Hydroplaning:
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can occur only if there is a lot of water on the road.
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can occur at speeds as low as 30 mph.
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can occur at speeds as low as 10 mph, if there is a lot of water.
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is less likely if tire pressure is low.
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33.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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34.
Air brakes:
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are prohibited on larger vehicles.
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should be used only when driving on wet roads.
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can improve fuel efficiency.
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are an effective way to stop large and heavy vehicles.
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35.
On ramp/off ramp curves should be taken:
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slightly below the posted speeds.
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at the posted speeds.
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well below the posted speeds.
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slightly above the posted speeds.
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36.
Which of these vehicles must come to a complete stop at railroad grade crossings?
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Heavy equipment
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Trucks carrying explosives
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School buses
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All of the above.
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37.
When driving on a slippery surface, you should do all of the following except:
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adjust braking to conditions.
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not pass slower vehicles unless necessary.
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keep a shorter following distance.
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watch far enough ahead to keep a steady speed.
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38.
An anti-lock braking system (ABS):
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should help you steer around an obstacle while braking.
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helps you avoid skids caused by over braking.
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helps you avoid wheel lock up.
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All of the above.
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39.
No matter how small the cargo is, it should have at least:
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4 tie-downs.
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2 tie-downs.
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1 tie-down.
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6 tie-downs.
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40.
Skids caused by acceleration can usually be stopped by:
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swerving to the left.
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swerving to the right.
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applying the brakes firmly.
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taking your foot off the accelerator.
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