Home » railML newsgroups » railml.interlocking » Overlaps mith multiple release timers and release sections? (Question about how to handle an overlap with multiple timers and release sections in railML)
Re: Overlaps mith multiple release timers and release sections? [message #3785 is a reply to message #3780] Fri, 07 November 2025 11:13 Go to previous messageGo to previous message
Jim Kjellberg is currently offline  Jim Kjellberg
Messages: 9
Registered: January 2025
Junior Member
Hi Joerg.

I think there is a difference in how RailML models overlaps and how Trafikverkets legacy data system models them.
In our legacy system the Overlap is defined once as the physical area too keep clear with a reference to the signal that is the ending point of all routes leading to the overlap.

The signal has timer values listed for release/unlocking (not sure on the correct translation from swedish here) for the route exit depending on route type. For example a "normal" route can have a timer of 90 seconds and a shunting route 0.

The conditions for triggering this timer is stored in the route-object that has a collection of the insulated sections that makes up the route.

Some routes have multiple conditions listed for example the second to last section can have the condition "occupied to free"
and the last section can have the condition "free to occupied". Always 0 or 1 condition per insulated section in the route, but sometimes multiple sections in the same route can have conditions.

I dont know ff this is correct and I'm trying to get hold of a co-worker with more knowledge about our Interlocking data to verify if this is correct or not.

But this means that I should be able collect all the info from the routes, overlaps and signals in the legacy system and create the needed overlaps in the railML file and then refer to them from RouteExit.

So if the legacy system have for example 3 routes ending at the same signal the resulting railML routes should refer to the same RouteExit object, and the RouteExit has relations to all the relevant Overlaps?

Regards
Jim Kjellberg
Trafikverket

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