Train

A train is a connected series of vehicles for rail transport that move along a track (permanent way) to transport freight or passengers from one place to another. The track usually consists of two rails,

Rail transport
Operations
Track
Maintenance
High-speed
Gauge
Stations
Trains
Locomotives
Rolling stock
Railways
History
Terminology
By country
Accidents

but might also be a monorail or maglev guideway.

Propulsion for the train is provided by a separate locomotive, or from individual motors in self-propelled multiple units. Most modern trains are powered by diesel locomotives or by electricity supplied by overhead wires or additional rails, although historically (from the early 19th century to the mid-20th century) the steam locomotive was the dominant form of locomotive power. Other sources of power (such as horses, rope or wire, gravity, pneumatics, and gas turbines) are possible.

The word 'train' comes from the Old French trahiner, itself from the Latin trahere 'pull, draw'.^[1]