CDL COMBINATION PRACTICE TEST MISSOURI
11.
You are coupling a tractor to a semi-trailer. You have backed up but are not yet under the trailer. Before backing under the semi-trailer, you should:
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supply air to the trailer system and lock the trailer brakes.
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begin raising the landing gear.
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connect the electrical cord and check the air lines.
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12.
When driving a combination vehicle, which of the following 2 things will help you prevent a rollover?
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Keeping cargo near the center of the vehicle and driving slowly on the highway.
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Keeping the cargo near the ground and driving slowly around turns.
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Keeping cargo near the center of the vehicle and driving slowly on turns.
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13.
If the fifth-wheel locking lever is not locked after the jaws close around the kingpin:
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the parking brakes are on and the wheels are chocked.
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the coupling is not right and you should not drive until you get it fixed.
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the parking brakes are on and your vehicle is safe to drive.
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14.
Whenever you back up with a trailer, position your vehicle so you can back in a straight line. If you must back on a curved path, back toward:
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Either side.
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the right side.
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the driver's side.
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15.
Containerized loads:
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must be inspected before and after the trip.
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should exceed gross weight and axle weight limits.
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are generally used for freight carried part way by rail or ship.
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16.
Before leaving your vehicle unattended, you should:
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Remove the keys.
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Apply the parking brake.
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All of the above.
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17.
For a cargo fire in a box trailer, you should:
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keep the doors shut.
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open the doors immediately and use the fire extinguisher.
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wait 10 minutes before opening the doors.
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18.
When inspecting the coupling, check that the safety latch is:
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pushing against the kingpin.
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in the "lock" position.
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in position over the locking lever.
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19.
To know how much space you should keep in front of you when driving at speeds below 40 mph, one good rule says you need at least ______ for each ______ of vehicle length.
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1 second; 5 feet
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2 seconds; 10 feet
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1 second; 10 feet
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20.
You are driving a heavy vehicle with a manual transmission, and you have to stop on the shoulder while driving on an uphill grade. When putting your vehicle back in motion up the grade, you should:
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use the parking brake to hold the vehicle until the clutch engages.
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partly engage the clutch before you take your right foot off the brake.
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shift down to a speed that you can control without using the brakes.
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