Air Brakes CDL Test - FREE Nebraska CDL Practice Test

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

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

2. Vehicles with ABS have ______ ABS malfunction lamps on the instrument panel.

3. The use of air brakes on a steep downgrade is only a supplement to:

the use of the "controlled braking" method.
the use of the parking brakes.
the use of the spring brakes.
the braking effect of the engine.

4. Which of the following is NOT part of the drum brake?

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

6. If you are feeling sleepy, you should:

7. After starting the engine, oil pressure should rise to a normal level:

8. Overloading a vehicle with cargo can have negative effects on all of the following except:

9. If a load is placed on one side of the trailer:

a rollover is more likely.
your brakes won't work.
making turns may be easier.
the steering axle weight will be too light to steer safely.

10. Excessive use of the service brakes results in overheating. Too much heat can:

cause the brakes to squeak.
make the brakes stop working.
cause the brakes to grab.
cause the brakes apply unevenly.

NE CDL AIR BRAKES PRACTICE TEST