OK CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
When driving trucks with trailers, drivers should:
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push the brake pedal to the floor when braking.
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avoid making sudden movements with the steering wheel.
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make quick lane changes.
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12.
Blocking is used to:
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protect the cargo from weather.
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protect people from spilled cargo.
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keep the cargo from sliding.
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13.
If the air compressor is belt-driven, you should check the air compressor drive belt before each trip. The belt should be:
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cracked.
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tight.
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loose.
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14.
Retarders:
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help slow a vehicle and reduce brake wear.
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help prevent accidents by applying extra braking power to the non-drive wheels.
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apply their
braking power whenever
you push on the accelerator.
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15.
Most heavy-duty vehicles use:
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hydraulic brakes.
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solid brakes.
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air brakes.
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16.
If a load is 10 feet long, the minimum number of tie-downs required is:
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2
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1
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3
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17.
When driving in extremely hot weather, if the air pressure in the tires is too high, you should:
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continue driving.
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stop and remain stopped until the tires cool off.
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let air out of the tires to decrease pressure.
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18.
What should you do if you doubt you have safe space to pass under a low bridge?
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Increase the weight of your vehicle to clearing under the bridge.
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If no warnings are posted, assume there is enough clearance under the bridge and proceed slowly.
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Go slowly, and take another route if you are not sure you can make it.
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19.
If you unlock the pintle hook with the dolly still under the rear trailer:
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the brakes could be damaged by the combined forces of the springs and the air pressure.
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the dolly tow bar may fly up.
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your vehicle might roll away.
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20.
When checking the engine compartment in a vehicle inspection, you should check all of the following except:
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Shock absorbers
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Engine oil level
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Windshield washer fluid level
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