Air Brakes CDL Test (2024) - FREE MS CDL Practice Test

1. What should you do to correct a drive-wheel braking skid?

Fully apply the brakes, turn the steering wheel quickly, push in the clutch, and countersteer.
Stop braking, turn the steering wheel quickly, push in the clutch, and countersteer.
Turn in the same direction as the skid.
None of the above.

2. When driving at night, you should:

look directly at the lights of oncoming vehicles.
put your own high beams on if other drivers don't put their low beams on.
use dark lenses if possible.
drive slowly enough to see obstacles with your headlights.

3. If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.

4. If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.

5. Which of the following is not a way to know when to change gears?

Use engine speed (rpm)
Check that the pressure gauge shows normal oil pressure
Watch your tachometer
Use road speed (mph)

6. Front wheel braking is good:

7. To control your speed on a downgrade, you should:

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

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

9. Before transporting sealed loads, you should check that:

the seal numbers match the placard numbers.
the load is properly secured.
the load can be inspected.
All of the above.

10. When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.

AIR BRAKES PRACTICE TEST - MISSISSIPPI