CDL Air Brakes Practice Test Results

Question 1
56% answer correctly
You should be in the proper gear before starting down a hill because:
It`s difficult to change gears while going downhill
To keep the brakes cool
The use of brakes is only a supplement to the braking effect of the engine
To keep your speed under control
Question 2
72% answer correctly
Spring brakes and air brakes should __________ be used together.
Never
Always
Sparingly
Frequently
Question 3
85% answer correctly
A supply pressure gauge is used for:
To check air tank pressure
To check for air leaks
To check air line pressure
To check tire pressure