Final answer:
The emergency brake system uses parts of the service and parking brake system to stop the vehicle in the event of a brake system failure.
Step-by-step explanation:
The statement is true.
The emergency brake system does indeed use parts of the service and parking brake systems to stop the vehicle in the event of a brake system failure. This is typically achieved by applying the parking brake, which activates the emergency brake system. The emergency brake system utilizes a separate set of brake components in order to provide an additional method of stopping the vehicle when the main brake system fails.
For example, in hydraulic brake systems, the emergency brake uses the same hydraulic pressure from the master cylinder to apply the brakes. However, instead of relying on the brake pedal and brake booster to generate the initial force, the emergency brake lever or pedal directly applies pressure to the brake calipers or drum brakes.