Rail transportation is vital to the U.S. economy. Trains haul
roughly one-third of the freight in the U.S. and commuters in
cities across the country rely on America’s railroads every day.
Rail transportation is vital to the U.S. economy. Trains haul
roughly one-third of the freight in the U.S. and commuters in
cities across the country rely on America's railroads every day.
Railroad locomotives fall into three size categories: * The
smallest of the locomotive engines (up to 2,000 horsepower) are
used in switch operations in freight yards to assemble and
disassemble trains, or are used in short hauls of small trains.
* Passenger locomotives (3,000 horsepower) are often accompanied
by an auxiliary engine for "hotel" power to passenger train
cars. * The most powerful locomotive engines (up to 4,000
horsepower) are primarily used for long distance freight train
operations. History of the Diesel Train Freight train engines
rely almost exclusively on diesel. The first over-the-road
diesel freight engines entered s