Section (rail transport)

In rail transport, a section could refer to: a portion of a train that may be operated independently and/or combined with other sections to operate as a single unit; or a portion of railway line designated for signalling or maintenance; or an interior portion of a sleeping car made up of two double seats during daytime that convert to two double berths during nighttime.
Trains could be split into multiple sections for reasons including: an abundance of freight or passengers requiring the use of a second train to cover a route; two or more routes with a common start point but multiple destinations on separate lines. Where multiple trains are used on the same route to convey an excess of freight or passengers, the trains will be defined as "first section," "second section," "third section," etc. to differentiate the vehicles for dispatching. Although it was not always the case that the first section travelled first, this naming and travel sequence was generally followed by convention.