Nuts & Bolts: Why is there an engine in the middle of that train?

Or, the Dynamic Benefits of Distributed Power. WASHINGTON, D.C. — When you spot a train at a crossing or pass one running along the highway, sometimes you’ll see an extra locomotive (i.e. engine) or two among the colorful boxcars, hoppers, autoracks and reefers. Do railroads use locomotives to transport… other locomotives? Sometimes, yes, but more

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