Track bed
The track bed or trackbed is the groundwork onto which a
railway track is laid. Trackbeds of disused railways are sometimes used for recreational paths or new light rail
links.
Background
According to
sub-ballast above a prepared subgrade
/formation (see diagram). It is designed primarily to reduce the stress on the subgrade.
Other definitions include the surface of the ballast on which the track is laid,[1] the area left after a track has been dismantled and the ballast removed[1] or the track formation beneath the ballast and above the natural ground.[2]
The trackbed can significantly influence the performance of the track, especially ride quality of passenger services.
See also
- Embankment (transportation)
- Roadbed
- Subgrade
References
- ^ ISBN 978-1-8472-8643-7., p. 386.
- ISBN 0-7509-4218-5.