Overview Search Up
Download details
2019 - November - Ogilvie_Grivicic - Re-useable signalling code – efficiencies in design and valida 2019 - November - Ogilvie_Grivicic - Re-useable signalling code – efficiencies in design and validation featured_orange_star

The benefits in using standardised designs for signalling installations have long been recognised. As technology advances, so too have the methods and opportunities available to utilise these efficiencies.

Throughout the history of signalling, various levels and methods of standardised design have been deployed:
• Mechanical interlockings using a standard lever and locking layouts;
• Electro-mechanical systems with geographic modules and typical circuits;
• Computer-Based Interlockings (CBIs) with built-in sub-routines and background functions.

In each instance, both benefits and impediments arose. Within the Processor-Based Interlocking (PBI) era, there has been a drift towards the provision of “rule sets”, which are closed to the signal designer; however, provide consistency and efficiency. Rule sets may be locked to a particular PBI, however, may also take the form of a specification which can be applied on many processor-based platforms. Key considerations, therefore, include requirements definition, validation, traceability, security and documentation.

This paper explores the options, considerations and benefits available in developing and using reusable and background
code in modern signalling systems.


Size242.29 KB
Download Language
AuthorOgilvie, Grivicic
Created byNick Hughes
Changed byNick Hughes

Only registered and logged in users can download this file.

Log in/Register

Please note that new passwords must include a capital letter and a numeral.

Join IRSE Australasia to get member prices and features.

Search this site