| Clearance indication trigger [message #3764] |
Fri, 24 October 2025 12:59  |
Terje Nordal
Messages: 17
Registered: December 2023
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Junior Member |
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Dear all,
As part of engineering of interlocking at Bane NOR, one situation we are required to handle is indicating to a train driver when the back of their train has passed a specific switch clearance. The indication is done either by a trackside lamp (typically in or legacy interlocking systems) or by a notification in the DMI of the train (our ETCS lines). It is often used for stations where long freight trains normally stop, to help them know when they have moved sufficiently long into a track.
In our ETCS engineering we specify this for specific train detectors, in a similar fashion to what we do with route release points (introduced in railML 3.3 as part of #3175). For railML the route release point can be specified as a trigger relating to the <routeExit>. Bane NOR suggest a similar implementation for a "Clearance indication trigger" for railML 3.4.
Best regards
Terje Nordal
Bane NOR
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