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Bo-Bo-Bo
Type of locomotive / From Wikipedia, the free encyclopedia
For the anime and manga series, see Bobobo-bo Bo-bobo.
A Bo-Bo-Bo or Bo′Bo′Bo′ (UIC classification) is a locomotive with three independent two-axle bogies with all axles powered by separate traction motors.[1] In the AAR system, this is simplified to B-B-B due to the system only taking powered axles into consideration, not traction axles.
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The Bo-Bo-Bo configuration is often used to lower axle weight while keeping lateral forces low compared to a locomotive with two three-axle bogies, thus allowing the locomotive to use lightly laid track, in particular narrow-gauge railways.