Which of the following is an auxiliary braking system?

Which of the following is an auxiliary braking system?

• A. Engine brakes
• B. Power steering
• C. Brake pedal wear indicator
• D. ABS only

Answer: (A)

Auxiliary braking systems provide stopping power beyond the main service brakes. Engine braking fits this role because it slows the vehicle by using the engine to convert some of the vehicle’s kinetic energy into heat, rather than applying the wheel brakes. This reduces wear on the service brakes and helps with control on long descents or when carrying heavy loads. It supplements the primary braking system rather than replacing it. Power steering isn’t a braking system at all, it helps with steering. A brake pedal wear indicator is simply a sensor that tells you when to service the brakes, not a braking method. ABS (anti-lock braking system) is part of the primary braking system and modulates brake pressure to prevent wheel lock, rather than acting as an additional braking method.

Auxiliary braking systems provide stopping power beyond the main service brakes. Engine braking fits this role because it slows the vehicle by using the engine to convert some of the vehicle’s kinetic energy into heat, rather than applying the wheel brakes. This reduces wear on the service brakes and helps with control on long descents or when carrying heavy loads. It supplements the primary braking system rather than replacing it.

Power steering isn’t a braking system at all, it helps with steering. A brake pedal wear indicator is simply a sensor that tells you when to service the brakes, not a braking method. ABS (anti-lock braking system) is part of the primary braking system and modulates brake pressure to prevent wheel lock, rather than acting as an additional braking method.