FREE MN CDL Combination Test - Practice Test 2024

1. Air brakes use ________ to make the brakes work.

2. If your cargo only fills one-third of the length of your trailer, make sure your cargo is:

loaded so there is a high center of gravity.
piled up high with heavy cargo on top.
to one side and as close to the ground as possible.
centered and spread out as much as possible.

3. After coupling the trailer, begin raising the landing gear by using:

4. If you let air out of hot tires:

air pressure will increases, causing the tires to blow out.
the tires will cool off much sooner.
as the tire cools, the air pressure will be too low.
None of the above.

5. A truck tractor with _________ requires the shortest stopping distance.

a fully loaded trailer
an empty trailer
a lightly loaded trailer
Weight has no impact on stopping distance.

6. If ABS is not working:

you will not have any brakes.
you will still have brakes.
you should use the parking brake.
you should use the emergency brake.

7. If an aggressive driver is involved in an accident down the road, you should:

stop a safe distance from the accident scene, wait for the police and report the behavior you witnessed.
try to get their vehicle to the side of the road.
confront the aggressive driver.
make eye contact with the driver.

8. Loose cargo:

can be a danger to others and yourself.
could fall off your vehicle and cause traffic problems.
could hurt or kill you during a quick stop.
All of the above.

9. After a tire has been changed, you should:

stop a short while later and check that the nuts are tight.
wait at least 30 minutes before driving.
decrease tire pressure.
deflate the tire to 15 psi.

10. What is countersteering?

Turning the steering wheel quickly the other way after steering in an emergency situation.
Driving too fast for conditions.
Staying off the brake while steering to the right to avoid an accident.
Locking your wheels while turning in an emergency situation.

MINNESOTA CDL COMBINATION PRACTICE TEST