CDL GENERAL KNOWLEDGE TEST (LA) - PRACTICE TEST
41.
Which of the following is NOT true?
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ABS won't compensate for poor brake maintenance.
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ABS only comes into play when a wheel would have locked up because of over braking.
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ABS won't compensate for bad brakes.
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ABS will change the way you normally brake.
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42.
To test your parking brake, do the following:
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Set the parking brake while going downhill.
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Speed up to 15 mph, then set the parking brake.
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Set the parking brake, and gently pull against it in a low gear.
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Speed up to 5 mph, then set the parking brake.
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43.
Which of these vehicles must come to a complete stop at railroad grade crossings?
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School buses
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Heavy equipment
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Trucks carrying explosives
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All of the above.
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44.
Air pressure should build up in a single air system, within about:
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10 minutes.
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1 minute.
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15 minutes.
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3 minutes.
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45.
What is the most important reason for doing a vehicle inspection?
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Liability insurance.
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It's required by law.
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To avoid fines.
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Safety for yourself and for other road users.
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46.
Which of the following statements about cargo weight is true?
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The shipper loads the cargo, and the driver is not responsible for recognizing overloads and poorly balanced weight.
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States have maximums for GVWRs, GCWRs and axle weights. You must keep weights within legal limits.
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It is always safe to operate at legal maximum weights.
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All of the above.
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47.
The 2 special conditions where you should downshift are:
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Before starting up a hill and before finishing a curve.
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Before starting up a hill and after finishing a curve.
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Before starting down a hill and before entering a curve.
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While going down hill and after finishing a curve.
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48.
When backing a trailer, you should:
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turn the steering wheel toward the direction you want to go.
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avoid using the brakes.
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turn the steering wheel in the opposite direction of the turn.
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try to position your vehicle so you can back on a curved path.
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49.
The height of a vehicle's center of gravity is important for safe handling. Why?
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Trucks with a high center of gravity have better traction.
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Trucks with a high center of gravity can roll over at the posted speed limit for a curve.
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A high center of gravity means you are less likely to tip over.
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All of the above.
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50.
When making a turn you should:
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make gestures to get the attention of other drivers.
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signal early.
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honk your horn.
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turn the signal off before entering the turn.
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