CDL Practice Test (2024) - FREE Ohio CDL Knowledge Test

1. Checking the automatic transmission fluid level may require:

the vehicle to be parked downhill.
the engine to be running.
the 4-way emergency flashers to be activated.

2. If your brakes fail on a steep mountain downgrade, you should:

slow down until your vehicle comes to a complete stop.
decide what to do as soon as you know your brakes do not work.
stay on the road and keep looking for the next available escape ramp.

3. In coming down steep downgrades, you should:

select an appropriate speed.
go slowly enough so your brakes don't get too hot.
All of the above.

4. To back safely, you should NOT:

back as slowly as possible and use the lowest reverse gear.
look at your line of travel before you begin backing.
back to the right side whenever possible.

5. When you have to back, you should use a helper:

when you need to back on a curved path.
whenever possible.
only when you back up with a trailer.

6. Slippery surfaces usually:

make it more difficult to stop.
can cause lack of steering power.
make it easier to stop.

7. Fully loaded rigs:

are less likely to roll over than empty rigs.
are just as likely to roll over as empty rigs.
are much more likely to roll over than empty rigs.

8. Black ice is:

a thin layer of ice clear enough that you can see the road underneath it.
wet ice.
dirty snow.

9. If a tire fails while you are driving, you should:

stop on the roadway if possible.
stay off the brake until your vehicle has slowed down.
call your supervisor for instructions.

10. Bracing is used to:

increase the height of the vehicle’s center of gravity.
prevent movement of cargo.
make cargo easier to unload.

OH CDL PRACTICE TEST - GENERAL KNOWLEDGE