Air Brakes Test New Hampshire (2024) - FREE CDL Practice Test

1. Before driving a vehicle with a dual brake brake system, the driver should:

pump the brake pedal 10 times to build pressure.
wait at least 5 minutes before driving.
wait at least 10 minutes before driving.
allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems.

2. The safety valve installed in the first tank the air compressor pumps air is set to open:

if there is too much pressure.
at 30 psi.
every 15 minutes.
if there is too little pressure.

3. When you use your mirrors while driving on the road, you should:

only use the driver's side mirror.
stare for a long time at the mirror.
avoid checking them regularly.
check them quickly.

4. Empty trucks require _____ stopping distances because empty vehicles have ______ traction.

less; less
greater; less
less; more
greater; more

5. With the controlled braking method, you:

push down on the brake pedal as hard as you can so that the wheels the lock up.
apply the brakes as hard as you can without locking the wheels.
apply the brakes all the way and release brakes when the wheels the lock up.
None of the above.

6. If are being followed closely, you should:

increase your following distance.
change lanes quickly.
flash your brake lights.
decrease your following distance.

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

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

8. Brake fade results from, and is affected by:

brakes out of adjustment.
excessive heat caused by not relying on the engine braking effect.
excessive heat caused by using the brakes too much.
All of the above.

9. You should drain the air tanks completely. If water and oil collect in the air tanks:

your brakes could heat up.
your brakes could fail.
your brakes could become hard to press.
None of the above.

10. To perform an applied leakage test, the vehicle’s air pressure should be built up to maximum pressure. Check the air gauge to see that the air pressure should drop no more than:

2 psi for single vehicles and 5 psi for a combination of 2 vehicles.
5 psi for single vehicles and 6 psi for a combination of 2 vehicles.
3 psi for single vehicles and 4 psi for a combination of 2 vehicles.
1 psi for single vehicles and 3 psi for a combination of 2 vehicles.

Number of questions:	25
Correct answers to pass:	20
Passing score:	80%

AIR BRAKES CDL PRACTICE TEST - NEW HAMPSHIRE

NH Air Brakes Test