The Class 66 is a type of diesel-electric locomotive widely used in the United Kingdom and Europe. Introduced in the late 1990s, it was designed for freight transport and is known for its reliability and efficiency. The locomotive can haul heavy loads and is often seen pulling goods trains across various terrains. With a distinctive design, the Class 66 features a powerful engine and a spacious cab for the crew. It is operated by several rail freight companies, including DB Cargo and Freightliner, and has become a common sight on the UK rail network, contributing significantly to freight logistics.