DEFINITION SOURCE

A rail organisation accredited consistent with AS4292 by an Accreditation Authority to be a track manager, train operator or provider of rolling stock. AS4292, Rail Safety Legislation

Alignment of track, referred to as horizontal or vertical alignment. Horizontal alignment is the design horizontal alignment of track (i.e. straights, curves, etc.), vertical alignment is the design v [..]

The principles and standards prepared, approved and published by the Standards Association of Australia relating to railway safety management. CMC 'Glossary for NCOP and Dictionary of Railway [..]

The weight force exerted on the rails by the two wheels on any axle of a vehicle when stationary on level track. AS7508

Stone or aggregate material spread on the ground for the purpose of holding the track in line laterally and longitudinally and also to provide drainage. ballast depth: Distance from the formation to t [..]

A structure incorporating suspension elements and fitted with wheels and axles, used to support rail vehicles at or near the ends and capable of rotation in the horizontal plane. It may have one, two [..]

A substantial displacement of track from its original design alignment caused by longitudinal thermal stresses overcoming the lateral resistance of the track. CMC 'Glossary for NCOP and Dictio [..]

The height difference, at a common location, between the running surface of both rails. Also known as 'superelevation' or 'cross level'. On curves in main line track it is usual to [..]

Abbreviated term for ‘closed circuit television’. UK Railway Group Guidance Note GK/GN0802 ‘Glossary of Signalling Terms’, Issue One, April 2004.