| Re: [railML2] Single and double derailer [message #3011 is a reply to message #2983] |
Fri, 10 June 2022 12:16  |
christian.rahmig
Messages: 436
Registered: January 2016
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Senior Member |
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Dear Georg,
thank you very much for your input related to requirements for a more detailed model of derailers in railML 2. As you know, we enhanced the derailer in railML 3.2. This includes the differentiation between single and double derailers via <derailerIS>@type and the default/preferred position of the derailer via <derailerIL>@preferredPosition.
For railML 2 I appreciate a solution that is very close to the modelling approach in railML 3.2. Therefore, I suggest not to use the already existing attribute <derailer>@kind as its values are defined according to the Railway Compendium "Railway Signaling and Interlocking" by Gregor Theeg: "blockDerail", "singleCatchPoints" and "doubleCatchPoints". In particular, I suggest the following approach:
* add new attribute @type with values "singleDerailer" and "doubleDerailer"
* use existing attribute @lockRef to link the derailer with a lock
* add new attribute @preferredPosition with values "derailingPosition" and "passablePosition"
* add new attribute @controllerRef to link the derailer with a controller element (interlocking)
Does this approach cover all your needs?
What does the community think about the need for a more detailed derailer model in railML 2?
Or is it sufficient to have a detailed derailer model implemented in railML 3?
Any comments are highly appreciated...
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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