Category:B′B′ locomotives

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Locomotives classified B′B′ under the UIC classification of locomotive axle arrangements.

• The nearest comparable AAR wheel arrangement is B-B.
• The equivalent British or Commonwealth classification of locomotive axle arrangements is B-B.

Most of these are diesel-hydraulic locomotives, where the axles of each bogie are coupled. Rarer are the electric transmissions, either electric locomotives or diesel-electric locomotives, where the two axles are coupled by a monomotor bogie rather than the more usual pair of per-axle traction motors.