| [railML3] Where does a under|overCrossing crossesElement? [message #3990] |
Wed, 06 May 2026 12:04  |
Mathias Vanden Auweele
Messages: 129
Registered: February 2025
Location: Brussels
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Senior Member |
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Hello,
In the case when an under or overcrossing has a crossesElement that refers to a netElement, we should be able to state where that netelement is crossed.
This is needed for schematic track layout use case. When you draw the under|overcrossing over|under the crossesElement netElement, you need to know where that happens (is it before or after that signal?). Else the result might not be good.
Proposal: add the possibility to add a spot|linear location to <crossesElement>
Mathias Vanden Auweele
Railway data freelancer
https://matdata.eu
Brussels, Belgium
[Updated on: Thu, 07 May 2026 19:57] Report message to a moderator |
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| Re: [railML3] Where does a under|overCrossing crossesElement? [message #4022 is a reply to message #4010] |
Fri, 29 May 2026 12:41  |
christian.rahmig
Messages: 555
Registered: January 2016
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Senior Member |
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Dear Mathias and Dominik,
thank you for sharing your thoughts on that topic.
I was wondering if we need any model extension at all... so let's have a look at the situation: We have an over- or underCrossing of our railway track with another part of our railway network (because only then I can have the reference to the netElement via \\crossesElement\@ref attribute). So, as the crossed netElement is also modelled, it should be also linked with infrastructure elements built on it. In particular, the overCrossing on my one netElement becomes an underCrossing on my other netElement and vice versa. And of course, this over-/underCrossing needs to be located on the netElement using intrinsic or linear coordinates, too, like it needs to be done with signals etc. So, basically I have all the information already in the model. The only thing missing is maybe a reference from the overCrossing to the underCrossing telling me that both elements describe the same infrastructure element, but from different (track) perspective.
What do you think about it?
Best regards
Christian
Christian Rahmig – Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Altplauen 19h; 01187 Dresden; Germany www.railML.org
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