DE CDL PRACTICE TEST - GENERAL KNOWLEDGE
11.
If ABS is not working:
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a yellow malfunction lamp will light up on the control panel.
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you should stay off the brake.
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the brakes will lock up.
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you should pump the brakes.
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12.
How should you hold the steering wheel?
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With your right hand on the wheel
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Firmly, with your left hand at the top of the wheel and the right hand at the bottom of the wheel
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With your left hand on the wheel
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Firmly, with your hands on opposite sides of the wheel
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13.
Which of the following statements about retarders is NOT correct?
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You should turn the retarder off whenever the road is wet, icy, or snow covered.
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Retarders help you avoid skids.
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Retarders reduce reduce brake wear.
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Retarders help slow a vehicle, reducing the need for using brakes.
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14.
Your driver license doesn't have the hazardous materials endorsement. You can drive a vehicle that carries hazardous materials if:
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one of your passengers has the hazardous materials endorsement.
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you are transporting hazardous materials for less than 50 miles.
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the vehicle does not require placards.
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All of the above.
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15.
When the road is very slippery, you should:
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stop at the first safe place.
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downshift to stop.
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use the parking brake instead of the service brake.
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apply the brakes often to keep the linings dry.
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16.
If your truck has automatic transmission, you should downshift:
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when you need to accelerate.
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after entering a curve.
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whenever road conditions allow.
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when going down grades.
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17.
The most important way to see the sides and rear of your vehicle is to:
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get out and walk around the vehicle.
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look out the window.
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check your mirrors regularly.
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look at your line of travel.
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18.
Loads that are over-length, over-width and/or overweight:
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require special transit permits.
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may require a police escort.
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may require special equipment such as “wide load” signs, flags and flashing lights.
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All of the above.
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19.
When taking a curve you should:
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brake in the curve to avoid to locking the wheels.
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maintain the same speed you were traveling at before entering the curve.
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slightly exceed the posted speed limit for the curve, as this will help you keep control.
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be in a gear that will let you accelerate slightly in the curve.
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20.
Retarders:
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reduce the danger of slipping.
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improve gas mileage.
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reduce braking distance.
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help slow a vehicle, reducing the need for using brakes.
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