diesel multiple unit
Plural
diesel multiple units
1
a type of train composed of self-propelled carriages powered by diesel engines
A diesel multiple unit (DMU) is a type of train that is powered by diesel engines and consists of several connected carriages, each with its own engine. Unlike traditional trains, which require a separate locomotive, each carriage in a DMU can move independently, allowing for more flexibility and quicker acceleration. DMUs are often used on regional or local passenger services, especially on tracks where electric trains cannot operate. They are popular in areas with less frequent rail service or where it is not practical to build electric rail infrastructure, providing a reliable and efficient way to transport passengers over medium distances.
- DMUs are commonly used for regional train services due to their flexibility and efficient operation.
- The diesel multiple unit travels at moderate speeds, making it suitable for short to medium-distance journeys.
- Passengers on a DMU can enjoy a relatively quiet ride compared to older locomotive-hauled trains.
- In some countries, DMUs have replaced older steam-powered or electric trains on branch lines.
- The design of a diesel multiple unit allows for easier maintenance and lower operational costs compared to traditional locomotives.