Diesel multiple unit
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A diesel multiple unit or DMU is a multiple-unit train powered by on-board diesel engines. A DMU requires no separate locomotive, as the engines are incorporated into one or more of the carriages. Diesel-powered single-unit railcars are also generally classed as DMUs. Diesel-powered units may be further classified by their transmission type: diesel–mechanical DMMU, diesel–hydraulic DHMU, or diesel–electric DEMU.
A JNR Class KiHa40 in use for Erimo Express service, Hokkaido, Japan
An IE 29000 Class diesel multiple unit on a western commuter service at Dublin Connolly Rail station, Ireland
A British Rail Class 185 diesel hydraulic multiple unit operated by TransPennine Express at Manchester Piccadilly station, United Kingdom
One of the underfloor diesel engines with hydraulic transmission under a car of JR Shikoku 2700 series DMU
Multiple unit
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A multiple-unit train or simply multiple unit (MU) is a self-propelled train composed of one or more carriages joined, which when coupled to another multiple unit can be controlled by a single driver, with multiple-unit train control.
A Deutsche Bahn ICE 3 EMU capable of up to 320 km/h (199 mph) in Rhineland-Palatinate, Germany
The Transwa Prospector DEMU is capable of speeds up to 200 km/h (124 mph), and provides a passenger service between Perth and the mining town of Kalgoorlie in Australia.
South Side Elevated Railroad car #1—one of the cars that Frank Sprague converted to MU operation in Chicago
A Coradia ZZe trainset from SNTF at Agha Station