CDL Combination Test (2024) - FREE Oregon Practice Test

1. When driving on slippery surfaces, you should:

change lanes often.
not pass slower vehicles unless necessary.
make turns as quickly as possible.
All of the above.

2. Cargo tie-downs are used to:

prevent right-turn accidents.
prevent skidding.
keep cargo from shifting or falling.
prevent freezing.

3. Strong winds can make it difficult to stay in your lane especially when driving:

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

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

5. Which of the following is NOT part of testing the trailer service brakes?

Moving the vehicle forward slowly.
Pushing in the trailer air supply knob.
Releasing the parking brakes.
Checking for normal air pressure.

6. It's very important to distribute the cargo so it is:

7. If there is a cargo fire in a van or box trailer, you should:

enlist the help of bystanders.
keep the doors shut.
open the doors, especially if your cargo contains hazardous materials.
keep driving until you reach help.

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

9. When your vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is called:

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

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

COMBINATION PRACTICE TEST - OR CDL