An indicator using optical fibres to provide the required illuminatedThe internal or external illumination of signalling equipment.
indication. Uses include StandardAn authorised document, including specification, procedure, instruction, directive, rule or regulation, which may set mandatory requirements. and Miniature Alphanumeric RouteThe path along a section of track between one Signal and the next, along which an authorised movement is to be made.
Indicators, Close Doors, Right Away and Off Indicators.