Definition: Diesel locomotive

Category: Transport

Locomotive, the main source of power of which is a diesel engine, irrespective of the type of transmission installed. 
Note: However, diesel-electric locomotives equipped to derive power from an overhead wire or from a conductor rail are classed as electric locomotives. http://ec.europa.eu/eurostat/ramon/statmanuals/files/KS-BI-03-002-__-N-EN.pdf