Delaware CDL Air Brakes Test (2023) - FREE CDL Practice Test

1. To brake in a way that will keep your vehicle in a straight line and allow you to turn if it becomes necessary, you can use:

the "controlled braking" method.
the "controlled braking" method or the "stab braking" method.
the "stab braking" method.
None of the above.

2. The air storage tanks:

protects the tank and the rest of the system from too much pressure.
stop the compressor from pumping air.
are used to hold compressed air.
are connected to the engine through gears or a v-belt.

3. When the air system is fully-charged, the air loss rate for a single vehicle with the engine off should be less than:

4. Most heavy-duty vehicles use:

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

6. Spring brakes are usually held back by:

7. The tire load rating is stated:

on each axle.
inside the suspension system.
on the dashboard.
on the side of each tire.

8. The supply pressure gauges tell you how much air pressure:

is going to the brake chambers.
is in the air brakes.
you are applying to the brakes.
is in the air tanks.

9. The use of brakes on a steep downgrade is:

much more effective than the engine braking effect.
a supplement to the braking effect of the engine.
the main braking factor.
dangerous, and should be avoided at all costs.

10. The total stopping distance for vehicles with air brake systems is made up of __ different factors.

CDL AIR BRAKES PRACTICE TEST - DELAWARE