Practice question

What is the primary role of the Governor in an air brake system?

  1. To control the air pressure in the system
  2. To manage the vehicle's speed
  3. To activate the brake lights
  4. To serve as a backup power source

Answer: A — To control the air pressure in the system

The primary role of the Governor in an air brake system is to control the air pressure in the system. This component is critical because it ensures that the air pressure remains within the required limits for effective braking performance. The Governor automatically regulates the compressor's operation, allowing it to fill the air storage tanks to the appropriate pressure level and prevent over-pressurization, which could lead to system failure. By maintaining this balance, the Governor helps ensure that the braking system operates reliably and safely, which is essential for the proper functioning of air brakes in heavy vehicles.

Practice more: New Jersey Air Brakes Practice Test →