CDL Air Brakes Test (2025) - FREE New York CDL Practice Test

1. Tractor and straight truck spring brakes will come fully on when the air pressure drops to a range of:

2. When driving at night, you should:

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

3. In a vehicle with a dual air brake system:

one system supplies air to the trailer.
both systems typically operate the regular brakes on the rear axle.
each system has its own air tanks.
All of the above.

4. Distracted driving may be caused by _________ while driving.

5. Air tanks usually hold enough compressed air to allow the brakes to be used _________ even if the compressor stops working.

6. To prevent rollover, you should:

put the lightest parts of the cargo under the heaviest parts.
place the cargo near the rear of the trailer.
keep the cargo as close to the ground as possible.
place the cargo near the front of the trailer.

7. When you make a quick lane change, the crack-the-whip effect can:

improve your traction.
the trailer to swing wide to the left.
turn the trailer over.
make it harder to turn without skidding.

8. In vehicles with air brakes, the brake pedal:

tells you how much pressure is in the air tanks.
pumps air into the air storage tanks.
let the air out of the spring brakes.
controls the air pressure applied to the brakes.

9. When the spring brakes are on, you should push the brake pedal down:

Never.
Only when approaching railroad-highway crossings.
Only when driving downhill.
Only when driving uphill.

10. When driving in a construction zone, if a construction worker is near the road, you should:

NEW YORK CDL AIR BRAKES PRACTICE TEST