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.
Frequently
Always
Sparingly
Never
Question 3
50% answer correctly
A safety valve is installed:
On the last air tank connected to the air compressor
On the air compressor
On every air tank connected to the air compressor
On the first air tank connected to the air compressor