COMBINATION TEST MONTANA - PRACTICE TEST
11.
Which of the following is true about the trailer hand valve?
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The trailer hand valve works the trailer brakes.
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It should be used only to test the trailer brakes.
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If used in driving it could cause the trailer to skid.
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All of the above.
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12.
Under a pressurized system, the radiator cap:
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should always be cool.
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should never be removed until the system has cooled.
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should never be hot.
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should be removed when the coolant is hot.
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13.
In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don't see the car. If you wish to change lanes, you should:
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wait until you are sure the car isn't in your blind spot.
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ease into the other lane slowly so the other car can get out of the way.
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assume the car left the roadway and change lanes as normal.
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None of the above.
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14.
If the safety relief valve in the air brake system releases air:
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something is wrong.
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the valve is fully operational.
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this will supply more power to the drive wheels.
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this will supply more power to the brakes.
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15.
When backing, as soon as you see the trailer getting off the proper path, you should:
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turn the top of the steering wheel in the direction of the drift.
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to keep a firm grip on the steering wheel and continue backing.
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turn the top of the steering wheel in the opposite direction of the drift.
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None of the above.
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16.
The tractor protection valve:
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works the trailer brakes.
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controls the emergency brakes on combination vehicles.
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supplies air to the trailer air tanks.
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keeps air in the tractor brake system should the trailer break away or develop a bad leak.
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17.
When transporting cargo, cargo securement must be checked within the first _____ miles of a trip and every _____ miles after.
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50; 150
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50; 250
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100; 150
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150; 250
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18.
The tire load rating is stated:
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on the dashboard.
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on each axle.
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inside the suspension system.
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on the side of each tire.
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19.
Combination vehicles usually require _________ single commercial vehicles.
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less driving skill than
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more driving skill than
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the same level of skill as
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None of the above.
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20.
If your vehicle catches fire, you should pull over:
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in an open area.
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near trees.
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at a service station.
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near other vehicles.
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