Railway structure

 
A Eurostar train on ballasted track
A Eurostar train on ballasted track
(Photo : JJ D’ANGELO)

A railway consists of rails which are laid on sleepers that are embedded in ballast or concrete on top of a subgrade. Points and crossings, consisting of rails and machined parts, allow trains to move from one track to another.

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The subgrade
Published on 19 February 2008
 
Ballast
Published on 19 February 2008
 
Sleepers
Published on 19 February 2008
 
Rails
Published on 19 February 2008
 
Points and crossings
Published on 19 February 2008