FREE WV CDL Combination Test (2024)

1. If you are driving a 30 foot vehicle at 35 mph, you should leave at least _______ between your vehicle and the vehicle in front of you.

2. When the trailer breaks away or develops a bad leak, the tractor protection valve will close automatically and:

the engine will shut down.
the tractor will lose all air pressure.
the trailer supply valve will stay open.
the trailer emergency brakes will come on.

3. To test the tractor-semitrailer connection for security:

pull out the air supply knob.
plug the electrical cord into the trailer and fasten the safety catch.
go under the trailer and look into the back of the fifth-wheel.
check that the trailer is locked onto the tractor by pulling the tractor gently forward while the trailer brakes are still locked.

4. A burning tire must be:

covered with cloth.
cooled with water.
immediately removed from the vehicle.
None of the above.

5. If you get stuck on the railroad tracks, the first thing you should do is:

immediately get out of the cab and move away from the tracks.
try to move your vehicle until you see the train.
scream for help.
stay in your vehicle and call 911.

6. A bridge formula permits:

less maximum axle weight for axles that are close together.
more maximum axle weight for axles that are closer together.
less maximum axle weight for axles that are far apart.
more maximum axle weight for axles that are far apart.

7. An Anti-lock Braking System (ABS):

always shortens your stopping distance.
increases your normal braking capability.
keeps your wheels from locking up when you brake hard.
lets you drive faster.

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

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

9. During a trip you need to inspect the cargo and its securing devices:

after every break you take.
every 3 hours or 150 miles.
within the first 50 miles after beginning a trip.
All of the above.

10. Emergency lines on combination vehicles are often coded with the color ____ to keep from getting them mixed up with the ____ service line.

WV CDL COMBINATION PRACTICE TEST