WV CDL COMBINATION TEST - PRACTICE TEST
11.
An item that is 15 feet long placed on a flatbed trailer should have at least:
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15 tie-downs.
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3 tie-downs.
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2 tie-downs.
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1 tie-down.
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12.
ABS helps you:
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steer gently and smoothly while you are braking.
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avoid wheel lock up and maintain control of your vehicle when you brake.
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stop much faster.
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increase your normal braking capability.
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13.
When backing a trailer, you should:
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turn the steering wheel toward the direction you want to go.
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pull-up frequently to reposition the vehicle.
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avoid braking.
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not back up in a straight line.
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14.
Air brakes:
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are prohibited on larger vehicles.
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are an effective way to stop large and heavy vehicles.
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should be used only when driving on wet roads.
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can improve fuel efficiency.
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15.
Emergency brakes must be must be held on by:
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the locking mechanism.
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air pressure.
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water.
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mechanical force.
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16.
In vehicles with air brakes, the tractor protection valve:
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provides the air pressure used to operate trailer brakes.
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carries air, which is controlled by the trailer hand brake or the foot brake.
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keeps air in the tractor or truck brake system.
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is used to connect the service and emergency air lines from the truck/tractor to the trailer.
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17.
The posted speed limit:
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may only be exceeded when driving in rural areas.
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should never be exceeded.
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should only be exceeded when passing other vehicles.
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is only a suggestion.
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18.
Livestock:
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can move around in a trailer and cause unsafe handling.
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should never be kept bunched together.
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should never be carried on a trailer.
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should always be placed in the rear of the trailer.
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19.
Emergency brakes are:
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not required on doubles.
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required on all vehicles.
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not required on commercial vehicles with air brakes.
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not required on buses.
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20.
When more cargo is piled up in a truck, the truck becomes easier to turn over. Fully loaded rigs are _________ to roll over in a crash than empty rigs.
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five times more likely
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less likely
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ten times more likely
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three times more likely
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