Permanent way

rail infrastructure

linear bearing and guide elements used in rail transport

support for the rails in railroad tracks

trackbed upon which railroad ties are laid

Maximum height and width for railway vehicles and their loads

place at which two or more rail routes converge or diverge

railway piece that features overlapping rails on the same sleepers

thumb|A fishplate joins two lengths of track.

structure on railway lines supporting (in some cases, sleepers and) rails

additional train rail used to resist derailment

thumb|right|Layers in the construction of a mortarless pavement: A.) Subgrade B.) Subbase (pavement)|Subbase C.) [[Base course D.) Paver base E.) Pavers F.) Fine-grained sand]] 450px|thumb|right|Section through railway track and foundation showing the sub-grade In transport engineering, subgrade is the term used in the US for the native material underneath a constructed road, pavement or railway track (US: railroad track). In British English it is called formation level.

railway track on urban streets used by trams

type of railway sleeper made out of prestressed concrete

method or steps that maintain, clean up, or repair a railway and lengthens its lifespan

international gap in railway to allow for track expansion

railway trackbed planted with grass or other vegetation