Rail freight transport is the use of railways and trains to transport cargo as opposed to human passengers.
A Class 92 hauled container freight train on the West Coast Main Line, United Kingdom
A long grain train of the Union Pacific Railroad crossing a bridge in Washington state, United States
Freight trains wait for departure in Zhengzhou, China
Freight wagons filled with limestone await unloading, at sidings in Rugby, Warwickshire, England
A train is a series of connected vehicles that run along a railway track and transport people or freight. Trains are typically pulled or pushed by locomotives or railcars, though some are self-propelled, such as multiple units. Passengers and cargo are carried in railroad cars, also known as wagons. Trains are designed to a certain gauge, or distance between rails. Most trains operate on steel tracks with steel wheels, the low friction of which makes them more efficient than other forms of transport.
An electric locomotive pulling a passenger train in Russia
A rack railway in Switzerland
Diesel locomotives pulling a freight train in New Zealand
A suspended monorail in Germany