IDAHO DOUBLES TRIPLES PRACTICE CDL TEST
11.
If you become drowsy while driving, you should:
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take a break.
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drink plenty of coffee.
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open the windows to get some fresh air.
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12.
An ABS system:
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requires a change in the way you brake.
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helps increase a vehicle's stopping power.
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is a safety anti-skid braking system.
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13.
Drivers transporting cargo are responsible for:
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recognizing overloads.
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inspecting the cargo.
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All of the above.
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14.
On front tires, tread should be at least:
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2/32 inch
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4/32 inch
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4/16 inch
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15.
When the wheels of a trailer lock up, which of the following is most likely to occur?
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The trailer will tend to swing around (trailer jackknife).
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The trailer will the trailer
has overturn.
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The trailer will tend to push the towing vehicle sideways (tractor jackknife).
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16.
Foundation brakes are used:
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only with the right wheels.
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at each wheel.
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only with the front wheels.
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17.
Retarders:
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reduce braking distance.
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improve gas mileage.
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help slow a vehicle, reducing the need for using brakes.
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18.
Enough tread is especially important in winter conditions. You need at least ________ tread depth on steering axle tires.
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6/24 inch
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4/32 inch
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2/8 inch
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19.
Doubles and triples are:
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more likely to turn over than other combination vehicles because of the "crack-the-whip" effect.
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less likely to turn over than other combination vehicles.
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easier to drive than other combination vehicles.
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20.
ABS:
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does not decrease your stopping distance.
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helps you increase your following distance.
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helps you increase your average speed.
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