Archives: Glossary Terms

In Block SignallingA system of controlling rail traffic defined by Block Sections. Normally only one train is permitted in a Block SectionThe section of line between one Section Signal and the next Home Signal. This term does not apply on a Track Circuit Block line. More. More, a Stop SignalAny SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More capable of showing a DangerAn indication given by a Signal to stop. More AspectAny valid visual indication of a Signal as displayed to the driver. More. More beyondIn relation to equipment on or alongside the track, positioned such that a train reaches it after passing another defined item […]

Obsolete abbreviation for Automatic Half-BarrierA Barrier for closing the entrance to a Level CrossingAn intersection at the same elevation of a road and one or more rail tracks. See Manned Level Crossing, Automatic Level Crossing and Open Crossing. More to the oncoming road traffic, whilst maintaining open the exit from the crossingA cast or fabricated portion of the track layout which enables the rails of the two tracks to cross each other, while still providing support and guidance for s... More. More CrossingA cast or fabricated portion of the track layout which enables the rails of the two tracks to cross each other, while still providing support and guidance […]

Abbreviated term for Automatic Half-BarrierA Barrier for closing the entrance to a Level CrossingAn intersection at the same elevation of a road and one or more rail tracks. See Manned Level Crossing, Automatic Level Crossing and Open Crossing. More to the oncoming road traffic, whilst maintaining open the exit from the crossingA cast or fabricated portion of the track layout which enables the rails of the two tracks to cross each other, while still providing support and guidance for s... More. More CrossingA cast or fabricated portion of the track layout which enables the rails of the two tracks to cross each other, while still providing support and guidance […]

Abbreviated term for As Low As Reasonably Practicable

A plate which indicates the radio identificationThe act of identifying. More number for a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More, in cases where this differs from the SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More NumberThe number associated with a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More for identificationThe act of identifying. More. More.

An alternative term for LitThe internal illuminationSee Illuminance. More of signalling equipment. More.

The process of re-directing the Beam Centre-Line of the device to pass through the Alignment PointA spatial reference point, through which the Centre-Line of the Beam emitted by a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More or Element should be directed, so as to achieve satisfactory Visibility… More.

The line (in three-dimensional space) of the beam Centre-Line.

A spatial reference point, through which the Centre-Line of the Beam emitted by a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More or Element should be directed, so as to achieve satisfactory Visibility. The Alignment PointA spatial reference point, through which the Centre-Line […]

A physical object used during the Aligning process to mark the Alignment PointA spatial reference point, through which the Centre-Line of the Beam emitted by a Signal or Element should be directed, so as to achieve satisfactory Visibility... More.