| Re: [railML3|alpha] Suggestion for an enhanced topology model [message #1671 is a reply to message #1432] |
Mon, 20 November 2017 17:24  |
christian.rahmig
Messages: 436
Registered: January 2016
|
Senior Member |
|
|
Dear all,
now that we are approaching towards railML 3.1 release, I want to answer
on your questions/requirements and how they have been implemented in the
new railML version:
Am 31.10.2016 um 13:21 schrieb Martin Karlsson:
> [...]
>
> My suggestion is rather to add - in railML, not RTM - a
> second layer of information, to reflect the topology related
> properties of the physical objects, in particular
> - dependence of relation navigability on the run time state
> of a physical object (i.e. the course of a switch)
By introducing the <switch> child element <switchBranch>, which may
reference a <netRelation> element, it is now possible to have a clear
linking between topology and functional infrastructure element. This
solution keeps the strict separation between both "layers", but ensures
that switches are correctly located within the railway topology network.
> - mutual exclusivity of navigable relations (in the case of
> diamond crossings)
The mutual exclusivity of navigable relations at diamond crossings is a
task to be realized on operational or interlocking level, because from
topology point of view it is possible to travel all paths like it is
possible to travel both branches at a switch. There is no need to define
an exclusivity parameter at the topology layer. In order to ensure that
the paths are not used at the same time by different vehicles, the
switch/crossing itself has the different child elements <*branch>, which
can be used for that purpose: In general, only one <*branch> can be
travelled at the same time.
> - length of tracks
The functional infrastructure element <track> has also a parameter
@length (in meters).
Best regards
Christian
--
Christian Rahmig - Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Phone Coordinator: +49 173 2714509; railML.org: +49 351 47582911
Altplauen 19h; 01187 Dresden; Germany www.railml.org
Christian Rahmig – Infrastructure scheme coordinator
railML.org (Registry of Associations: VR 5750)
Altplauen 19h; 01187 Dresden; Germany www.railML.org
|
|
|
|
Members
Search
Help
Login
Home
