CDL Combination Test (2024) - FREE Pennsylvania CDL Practice Test

1. The best way to test the trailer service brakes is to:

put the handbrake on when there are no vehicles around you.
accelerate to the maximum possible speed, then apply the trailer brakes fully.
pull forward quickly, then apply the trailer brakes with your hand control.
None of the above.

2. When using a fire extinguisher, you should stay:

as far away from the fire as possible.
as close to the fire as possible, without getting burnt.
at least 10 feet away from the fire.
at whatever distance you think is safe.

3. If a load is 10 feet long, the minimum number of tie-downs required is:

4. Hanging meat in a refrigerated truck can be:

a very stable load if properly distributed.
a very stable load with a low center of gravity.
a very unstable load with a high center of gravity.
a very unstable load with a low center of gravity.

5. Weight that is loaded so there is a high center of gravity:

reduces the chance that the load will shift to the side or fall off.
makes a vehicle easier to handle.
causes greater chance of rollover.
All of the above.

6. If you are being tailgated, you should:

increase your following distance.
speed up.
flash your brake lights.
move to the left lane.

7. The center of gravity of a trailer should be:

8. How many red reflective triangles should you carry?

9. During a walk around inspection of a combination vehicle, drivers should check that:

the locking jaws are around the shank.
the glide plate is securely mounted to the trailer frame.
all locking pins are present and locked in place.
All of the above.

10. If your vehicle thumps or vibrates heavily, it may be a sign that:

COMBINATION TEST PENNSYLVANIA - PRACTICE TEST