Under the British and Imperial classification scheme of locomotive axle arrangements 1Co+Co1 is a classification code for a locomotive wheel arrangement of two eight-wheeled bogies with an articulated inter-bogie connection, each with three axles powered by a separate traction motor per axle and with the fourth non-powered axle in an integral leading pony truck to reduce the axle load. The similar 1Co-Co1 classification is in the same axle configuration, but without the inter-bogie connection.

The South African Railways Class 32-200 of 1966 was a diesel-electric locomotive.