DMU

Diesel multiple unit (DMU) trains are a type of train that consists of self-propelled carriages, each with its own diesel engine. Unlike locomotive-hauled trains, DMU trains do not require a separate locomotive to pull or push them. DMU trains can operate on both electrified and non-electrified lines, and can be coupled or uncoupled easily to form longer or shorter trains.

DMU trains are a common and popular mode of transport in the UK, especially on rural and regional routes where electrification is not feasible or economical. They offer many benefits to both operators and passengers, such as flexibility, efficiency, and comfort. However, they also have some drawbacks, such as high maintenance and operating costs, safety and environmental risks, and lower speed and performance. Therefore, DMU trains are not a perfect solution, but rather a compromise between the advantages and disadvantages of different types of trains.