GENERAL KNOWLEDGE CDL TEST COLORADO - PRACTICE TEST
41.
The tractor protection valve:
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keeps air from going out if the air compressor develops a leak.
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keeps your wheels from locking up when you brake hard.
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keeps air in the brake system should the trailer develop a bad leak.
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prevents the trailer from being accidentally released.
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42.
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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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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wait until you are sure the car isn't in your blind spot.
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None of the above.
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43.
When driving past parked vehicles, you should:
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watch for clues that the parked vehicle is about to move.
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turn on your taillights.
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stay close to the vehicles.
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sound your horn.
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44.
If the low air pressure warning light comes on, you should:
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set the parking brake.
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call for help.
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stop immediately.
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continue to drive normally.
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45.
Why should you check your mirrors regularly to know where other vehicles are around you?
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To better assess your own speed.
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To move out of their way if they want to get past.
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To know whether you can make a quick lane change in an emergency.
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To flash the brake lights if you are being tailgated.
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46.
Which of these is true about the radiator shutters and the winterfront?
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If the winterfront is left open, the engine may overheat.
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You should remove ice from the radiator shutters.
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You should make sure the winterfront is closed tightly.
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All of the above.
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47.
When making a turn, you should cancel your turn signal:
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once you have completed the turn.
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once you have begun the turn.
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once more than half of your vehicle is round the turn.
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once the rear end of your cab has cleared the turn.
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48.
When driving, you should check your mirrors:
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every 4 seconds.
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every 10 seconds.
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regularly.
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only when there may be a problem.
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49.
With an engine fire, you should:
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not shoot foam from the vehicle’s underside.
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open the hood as soon as possible.
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turn the engine off as soon as possible.
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All of the above.
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50.
In the event of brake failure you should NOT:
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use the parking brake.
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shift up.
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downshift.
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pump the brakes.
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