WASHINGTON CDL AIR BRAKES PRACTICE TEST
6.
ABS:
|
is an addition to your normal brakes.
|
|
|
should only be used on dry roads.
|
|
|
allows you to brake harder.
|
7.
Excessive use of the service brakes results in overheating and leads to:
|
brake fade.
|
|
|
poor traction.
|
|
|
reduction of the brake drums.
|
8.
To test the low pressure warning signal, you should:
|
pump the brakes while your vehicle is running.
|
|
|
check the air hoses connected to the brake chambers to make sure they aren't cut.
|
|
|
shut the engine off when you have enough air pressure, turn the electrical power on and step on and off the brake pedal until the low air pressure warning signal comes on.
|
9.
If air doesn't flow all the way to the back:
|
a rollover is more likely.
|
|
|
the trailer will tend to swing around.
|
|
|
your brakes will not work properly.
|
10.
Before driving a vehicle with a dual air brake system, you should allow time for the air compressor to build up a minimum of ____ pressure in both the primary and secondary systems.
|
50 psi
|
|
|
100 psi
|
|
|
150 psi
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More