FREE CDL Air Brake Dangers and Safety Questions and Answers

Question 1

What can cause brake fade or failure?

Accepted Answer

Overheating due to excessive braking

Answer

Insufficient air pressure in the system

Answer

Using the brakes too lightly

Answer

Relying too much on the engine brake

Question 2

What should you do if your low air pressure warning activates?

Accepted Answer

Stop immediately and safely park the vehicle.

Answer

Keep driving until you find a repair shop.

Answer

Pump the brakes to restore air pressure.

Answer

Activate the parking brake immediately.

Question 3

How can you avoid brake fade when driving downhill?

Accepted Answer

Use a lower gear and only apply the brakes when necessary.

Answer

Apply the brakes lightly and continuously.

Answer

Pump the brakes rapidly to keep them cool.

Answer

Shift to neutral and rely on service brakes.

Question 4

How often should air tanks be drained?

Accepted Answer

Daily, at the end of each shift

Answer

Once a week

Answer

At every oil change

Answer

Only when you hear water in the system

Question 5

When should you avoid using the parking brake?

Accepted Answer

When the brakes are hot after a long descent.

Answer

When the vehicle is parked on a steep incline.

Answer

When the air pressure is below 60 psi.

Answer

When parking in freezing temperatures.