Air Brakes and Train Handling Rules - Alaska Railroad

GlossaryDrawbar ForcesThe longitudinal forces at the couplers between cars or locomotives.The forces may be draft or buff, depending on train operation.Dynamic BrakeThe system that electronically converts energy created by themomentum of a moving locomotive into an effective retardingbrake.Emergency ApplicationA reduction in brake pipe pressure at a rate sufficient to causecontrol valves to move to the emergency position.Emergency Brake ValveThe valve used to initiate an emergency brake application. It isfound on locomotives, cabooses, passenger cars, and some workequipment.Emergency ReservoirA storage volume on cars for compressed air. This reservoir ischarged from the brake pipe and provides air pressure for emergencybrake applications and certain recharge features.End-Of-Train (EOT) Telemetry DeviceA system of components that determines the rear car brake pipepressure and transmits that information to the display on thelocomotive cab unit (LCU).Equalizing ReservoirA small reference volume on locomotives used to make servicebrake applications.G-6 ARRC Air Brakes and Train Handling Manual June 1, 1996