CDL COMBINATION PRACTICE TEST COLORADO
11.
If your vehicle catches fire, you should pull over:
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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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in an open area.
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12.
When you get ready to back under the semi-trailer, you should:
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line up directly in front of the trailer.
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line up the kingpin to engage the driver's side locking jaw first.
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line up about 15 degrees off the line of the trailer.
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back under the trailer at an angle to avoid pushing the trailer sideways.
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13.
What can cause poor traction?
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Too little weight on the driving axles.
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Too much weight on the steering axle.
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Overloading the truck.
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All of the above.
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14.
During a walk around inspection of a combination vehicle, drivers should check that:
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the glide plate is securely mounted to the trailer frame.
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all locking pins are present and locked in place.
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the locking jaws are around the shank.
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All of the above.
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15.
If you get stuck on railroad tracks, you should:
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get out of the vehicle and away from the tracks.
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have a helper push your vehicle.
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stay in the vehicle and call for help.
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check the engine compartment quickly.
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16.
Anti-lock brakes:
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reduce the perception distance.
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help you stop faster.
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increase your stopping distance.
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keep your brakes from locking up when you brake hard.
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17.
If driving a new vehicle, you should familiarize yourself with the controls and equipment:
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within the first 50 miles.
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as you drive.
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after pulling into a service station.
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before you start driving.
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18.
At passive railroad crossings, even if there are active railroad signals that indicate the tracks are clear, you must _________ to be sure it is safe to proceed.
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go, stop and listen
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stop, look, and listen
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listen, look and stop
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go, look and put the transmission in neutral
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19.
How do you find out how many seconds of following distance you have?
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Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach the same spot.
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Wait until the vehicle ahead of you passes a pavement marking or some other clear landmark, then use the stopwatch on your mobile phone to see how long it takes you to reach the same spot.
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Wait until the vehicle ahead of you passes a pavement marking, shadow or landmark. Then count off the seconds until you reach the same spot.
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None of the above.
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20.
For a cargo fire in a box trailer, you should:
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open the doors immediately and use the fire extinguisher.
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use the fire extinguisher on the doors.
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keep the doors shut.
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wait 10 minutes before opening the doors.
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