In the Whyte notation, a 4-6-0's a railroad steam locomotive that's a two-axle leading truck followed by three driving axles. This wheel arrangement became the second-most popular configuration for new steam locomotives in America in the mid-19th century. In the United States this type's commonly called a ten-wheeler. Other equivalent classifications are: UIC classification: 2C (also known as German classification and Italian classification) French classification: 230 Turkish classification: 35… (More on 4-6-0)