A diesel train is a type of locomotive that uses a diesel engine for power. Unlike steam trains, which rely on coal or wood, diesel trains are more efficient and can operate over long distances without needing frequent stops for fuel. They are commonly used for both passenger and freight transport. Diesel trains come in various designs, including diesel-electric and diesel-hydraulic systems. The diesel engine generates electricity or directly powers the wheels, allowing for smooth acceleration and high speeds. These trains are popular in many countries due to their reliability and lower operational costs compared to other types of trains.