The new Amtrak High Speed Trainsets used in ACELA Express service on the Northeast Corridor are equipped with an advanced microprocessor controlled braking system with full pneumatic control back-up protection. The system is designed to provide high reliability, to prioritize high levels of electric braking from power cars on each end of the trainset and to fully blend electric braking effort with the pneumatic friction braking effort of the entire trainset. This type of control which optimizes power conservation through regenerative braking and decreases wear and thermal stress on friction brake components is similar to that used on the German Railways ICE trainsets but is totally new and unique to North American inter-city rail vehicles. This paper will describe the system, special components and performance of this equipment.

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