KY CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
To test your parking brake, do the following:
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Speed up to 15 mph, then set the parking brake.
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Set the parking brake while going downhill.
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Speed up to 5 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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12.
On front tires, tread should be at least:
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2/32 inch
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1/16 inch
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4/16 inch
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4/32 inch
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13.
Most heavy duty vehicles use ___ air brake systems for safety.
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triple
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dual
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single
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reduced
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14.
No matter how small the cargo is, it should have at least:
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4 tie-downs.
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6 tie-downs.
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1 tie-down.
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2 tie-downs.
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15.
If you become drowsy while driving, you should:
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drink plenty of coffee.
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try to fight it.
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open the windows to get some fresh air.
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take a break.
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16.
In a combination vehicle, ________ is most likely to turn over.
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the trailer behind the tractor
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the last trailer
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the tractor
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All of the above.
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17.
If your trailer starts to skid, you should:
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pump the brakes.
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steer in the opposite direction.
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lock the brakes.
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release the brakes.
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18.
An ABS system:
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requires a change in the way you brake.
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decreases your stopping distance.
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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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19.
When coupling double trailers, if the second trailer does not have spring brakes, to set the trailer emergency brakes you should:
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1. Connect the emergency line 2. Charge the trailer air tank. 3. Drive the tractor close to the trailer 4. Disconnect the emergency line.
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1. Connect the emergency line 2. Drive the tractor close to the trailer 3. Disconnect the emergency line 4. Charge the trailer air tank.
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1. Disconnect the emergency line 2. Drive the tractor close to the trailer 3. Charge the trailer air tank 4. Connect the emergency line.
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1. Drive the tractor close to the trailer 2. Connect the emergency line 3. Charge the trailer air tank 4. Disconnect the emergency line.
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20.
Driving in very hot weather:
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can increase tire pressure.
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can decrease oil pressure.
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can make it difficult to stay in your lane.
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should never be done.
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