What is Full Service Braking?

What is Full Service Braking?

• A. The portion used for emergency braking only.
• B. The braking that occurs when accelerating.
• C. The braking during normal operation only.
• D. The upper limit of the service braking effort normally required to stop the LRV/train, consisting of both dynamic and friction brakes as needed.

Answer: (D)

Full service braking is the maximum braking effort used during normal operation, combining both dynamic (regenerative) braking and friction brakes as needed to bring the LRV/train to a stop. It represents the upper limit of what you apply within the service braking regime, not the emergency stop. Dynamic braking slows the train by motor actuation and can recover energy, while friction brakes provide additional stopping power when needed, especially as speed changes or extra deceleration is required. This concept isn’t about braking during acceleration, and it isn’t limited to braking that happens only under normal operation unless you hit that upper limit. Emergency braking is a separate, more abrupt action beyond full service braking.

Full service braking is the maximum braking effort used during normal operation, combining both dynamic (regenerative) braking and friction brakes as needed to bring the LRV/train to a stop. It represents the upper limit of what you apply within the service braking regime, not the emergency stop. Dynamic braking slows the train by motor actuation and can recover energy, while friction brakes provide additional stopping power when needed, especially as speed changes or extra deceleration is required. This concept isn’t about braking during acceleration, and it isn’t limited to braking that happens only under normal operation unless you hit that upper limit. Emergency braking is a separate, more abrupt action beyond full service braking.