A shuttle train is a railway service that runs back and forth over a short route between two places. They are used in various ways in different parts of the world, to carry passengers, freight or both.
Passenger trains are generally one of two types:
Airport shuttles run between an airport terminal and one or more other locations, such as another terminal, a railway station or car park; often a combination of these locations. They are generally in the form of a driverless people mover or automated guideway transit (AGT); examples include:
A shuttle train may also be used to carry commuters, especially if at least one of the shuttle train's stations is an interchange:
A car shuttle train is used to transport accompanied automobiles and also other types of road vehicles, for a relatively short distance. They usually operate on lines passing through a rail tunnel and connecting two places not easily accessible to each other by road. On these services, passengers tend to stay with their vehicles throughout the journey.
Unit trains that are dedicated to move on a regular basis between origin and destination are known as shuttle trains by the Union Pacific Railroad and the BNSF Railway