Air Brake Practice Test

During a failure of the air compressor, the air brake system will lose air pressure. The air compressor is responsible for generating and maintaining the air pressure necessary for the brake system to function effectively. If the compressor fails, it can no longer produce the compressed air needed to sustain the brakes. This loss of air pressure can lead to a decrease in the braking capability of the vehicle, which is critical for safe operation. Without adequate pressure, the brakes may not engage properly or could fail entirely, making it essential for drivers to ensure their air compressor is functioning correctly.

Other factors, such as the brake lights or the air horn, are not directly impacted by the air compressor's performance in a way that would relate to braking function. While a failed air compressor can lead to significant safety risks due to loss of braking capacity, it does not typically cause issues with brake lights or air horns independently.