FREE ME CDL Combination Test (2024)

1. If your truck catches fire, the first thing you should do is to:

pull off the road and park in an open area.
get the vehicle off the road and park near other vehicles.
pull into a service station and call for help.

2. You are coupling a tractor to a semi-trailer and have backed up but are not yet under the trailer. Before backing under the semi-trailer, you should hook up:

the electrical service cable.
the safety chain.
the emergency and service air lines.

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

the brakes have failed.
one of the tires has gone flat.
you need to shift up.

4. When should you use the hand valve to park a combination vehicle?

When parking downhill.
Never.
To park at loading docks.

5. The crack-the-whip effect:

can cause a vehicle to tilt.
can turn the trailer over.
the ends of some vehicles to drag.

6. Before leaving your vehicle unattended, you should:

Remove the keys.
Apply the parking brake.
All of the above.

7. When uncoupling, after you unlock the fifth-wheel you should:

pull the tractor partially clear of the trailer.
chock the trailer wheels.
ease the pressure on the locking jaws.

8. Glad hands are used to:

connect the brakes from the truck or tractor to the trailer.
connect the service and emergency air lines from the truck or tractor to the trailer.
connect the electrical lines from the truck or tractor to the trailer.

9. To prevent rollover, drivers of combination vehicles should:

keep the load is to one side.
keep the cargo as close to the ground as possible.
brake while turning.

10. As you approach off ramps and on ramps, remember:

that the posted speed limit may not be safe for larger vehicles.
that downgrades make it easier to reduce speed.
to always brake and turn at the same time.

Number of questions:	20
Correct answers to pass:	16
Passing score:	80%

ME CDL COMBINATION PRACTICE TEST

ME CDL Combination Test