FREE West Virginia CDL Combination Test 2024 (Practice Test)

1. If the spring brakes do not release when you push the trailer air supply control, you should:

check the air line connections.
pump the brakes.
check the electrical cables.
rev or lug the engine.

2. If you must drive slowly, how should you alert following drivers?

Flash your brake lights
Help them out by signaling when it is safe to pass
Use your emergency flashers if it is legal
Turn on your taillights

3. On a tractor-trailer equipped with a trailer brake hand valve, the hand valve can be used to:

keep from rolling back.
reduce the chance of the front wheels skidding.
hold compressed air.
prevent movement of cargo.

4. When inspecting the coupling, check that the safety latch is:

in position over the locking lever.
in the "lock" position.
pushing against the kingpin.
None of the above.

5. When you park trailers without spring brakes, you should use wheel chocks:

to keep the trailer from moving.
to prevent overheating.
to prevent air from escaping.
to prevent the transmission from shifting up.

6. You are driving a combination vehicle and must use your brakes to avoid a crash. You should:

use stab braking or controlled braking.
use the parking brake.
push the brake pedal as hard as you can and hold it there.
brake lightly and hold the steering wheel firmly.

7. If your trailer starts to skid, you should:

steer in the opposite direction.
pump the brakes.
lock the brakes.
release the brakes.

8. Antifreeze:

helps the engine under hot conditions as well as cold conditions.
doesn't help the engine in any way.
helps the engine only under hot conditions.
helps the engine only when the temperature is below freezing.

9. To prevent a rollover, the driver should:

drive on the shoulder if possible.
make quick lane changes if possible.
pay extra attention to the coolant level.
drive slowly around corners, on ramps, and off ramps.

10. Longer combination vehicles have the tendency to swing wide on turns. This is called:

WV CDL COMBINATION TEST - PRACTICE TEST