Although historically steam propulsion dominated, the most common modern forms are diesel and electric locomotives, the lattnclude horses, engine or water-driven rope or wire winch, gravity, pneumatics, batteries, and gas turbines.
Although historically steam propulsion dominated, the most common modern forms are diesel and electric locomotives, the latter supplied by overhead wires or additional rails. Other energy sources include horses, engine or water-driven rope or wire winch, gravity, pneumatics, batteries, and gas turbines.