Ask MR: What is dynamic braking and how does it work?

Two black Norfolk Southern diesel locomotives pull a string of empty hopper cars

Q: What is dynamic braking on trains? – Mark Kroll A: Unlike a typical diesel-powered car or truck, a diesel locomotive doesn’t have a direct mechanical linkage between its diesel engine and its wheels. These locomotives are more properly called diesel-electrics. Rather than turning a driveshaft that drives the wheels, the engine (or “prime mover”) […]

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