Home » railML newsgroups » railML.infrastructure » Stop strategies (Different use cases for stopping strategies (on platform edges))
Stop strategies [message #2616] Tue, 15 December 2020 08:53 Go to next message
Laszlo Blenessy is currently offline  Laszlo Blenessy
Messages: 1
Registered: December 2020
Junior Member
Dear RailML.org members/developers,


In the context of a workshop with RailML, in order to showcase the entities around platforms and stop edges, we have depicted various use cases of stopping strategies:

  • Symmetric to platform center
  • Alignment with train head
  • Alignment with train end
  • Symmetric to the platform entry point

Please see the attachment for details:
/forum/index.php?t=getfile&id=79&private=0

During the workshop, it has been proposed to also share the diagram on this forum to potentially discuss its compatibility/modeling with RailML v3.2.


Best regards,
Laszlo Blenessy.
Re: [railML3] Stop strategies [message #2617 is a reply to message #2616] Fri, 18 December 2020 11:51 Go to previous message
christian.rahmig is currently offline  christian.rahmig
Messages: 447
Registered: January 2016
Senior Member
Dear Laszlo,

thank you very much for your forum posting and welcome to the railML community!

The scenarios depicted in your figures are very important for the common understanding of how to use the already defined railML infrastructure data model for specifying the exact stopping places for railway vehicles related to the station / operational point and the platform edge.

The relevant elements and parameters in the infrastructure data model are:
* (spot) location of <operationalPoint> on microscopic level to describe the center of the OP related to a station track
* the (linear) location of a <platformEdge> on microscopic level
* the (spot) location of a <stoppingPlace> on microscopic level linked with a certain track
* the train relation of the <stoppingPlace>

For scenario A ("symmetric to the platform center"), the parameters would be used as follows:
* <stoppingPlace>: @isSignalized="false", @trainRelation="midOfTrain", spot location in the middle of the <platformEdge> linear location
* <platformEdge>: linear location

Scenario B ("train head at the end of the platform"):
* <stoppingPlace>: @isSignalized="false", @trainRelation="headOfTrain", spot location at the end of the <platformEdge> linear location
* <platformEdge>: linear location

Scenario C ("train end at the beginning of the platform"):
* <stoppingPlace>: @isSignalized="false", @trainRelation="endOfTrain", spot location at the begin of the <platformEdge> linear location
* <platformEdge>: linear location

Scenario D ("symmetric to the platform entry point at 250m on the Stop Edge") is the tricky one. Assuming that the platform entry point defines the center of the operational point on this station track, parameters may look like this:
* <stoppingPlace>: @isSignalized="false", @trainRelation="midOfTrain", spot location identical with <operationalPoint>'s spot location on the track.
* <operationalPoint>: spot location (on microscopic level)

And, there is also a new scenario E: "train head at stop post panel". In this case, the knowledge about the location of the stop post panel (de: Haltetafel) is required. Having this, the scenario is defined like this:
* <stoppingPlace>: @isSignalized="true", @trainRelation="headOfTrain", spot location identical with <signalIS / isStopPost>'s spot location on the track.
* <signalIS / isStopPost>: spot location (on microscopic level)

In all scenarios, it is possible to restrict the stopping possibilities to railway vehicles matching certain constraints, e.g. maximum length of train, number of wagons, train movement type (shunting, freight, ...).

So, to summarize: railML 3 is able to deal with all your scenarios. However, what I would like to know from the community: How do you use the railML infrastructure model with respect to modelling train stops in stations. Let's find out the best practices and bring them into the railML wiki, so that everybody has the chance to model a certain type of train stop always in the same manner.

Thank you very much and best regards
Christian


Christian Rahmig – Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Altplauen 19h; 01187 Dresden; Germany www.railML.org
Previous Topic: [railML3] speed at level crossing
Next Topic: [railML3] Natural hazards detection
Goto Forum:
  


Current Time: Sat Jul 20 09:14:00 CEST 2024