| Re: Speed Panels: types and reference to <speedChange> [message #346 is a reply to message #331] |
Sat, 01 September 2012 10:38   |
Christian Rahmig
Messages: 151
Registered: January 2011
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Senior Member |
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Hello Pierre,
> In the Belgian railway five different speed panels types exists :
> -Announcement
> -Origin
> -reference
> -End_zone_green
> -End_zone_yellow
>
> An example will be provided in the next days to illustrate these types.
>
> It would be nice to have the <speedPanel> element in a next version of
> railML, and with the following types
> - announcement
> - execution
> - repetition
the <speedPanel> element within its container <speedPanels> is a special
type of a panel and therefore implemented within the <panels> container
in <ocsElements> with railML 2.2 as described in the post [1].
The definition of various speed panel types is a good extension to the
panel concept. It can be either realized by defining a new parameter
"speedPanelType" having the values 'announcement', 'execution' and
'reminder' or by setting up boolean parameters for each type, i.e.
"announcementPanel",
"executionPanel" and
"reminderPanel".
Any comments about a preferred solution are appreciated.
> In order to make the connection with the speed profile on the tracks, a
> reference from the <speedPanel> to the <speedChange> is needed.
>
> [de: Es wird ein Element fuer Geschwindigkeitstafeln/Lf-Signale benoetigt.
> Sie sollten eine Referenz zu dem entsprechenden <speedChange> haben. Zudem
> werden obige Typen zur Charakterisierung empfohlen.]
As you correctly mentioned, speed panels may refer to actual speed
changes, e.g. at a speed restriction section. I suggest a parameter
"speedChangeRef" within the element <speedPanel>, which refers to the ID
of a <speedChange> element.
However, this concept of referencing other elements may be applied to
other types of panels as well. In particular, catenary panels may refer
to <electrificationChange> elements or levelcrossing panels can link to
<levelCrossing> objects.
Regards
[1]
http://www.railml.org/forum/ro/index.php?group=1&offset= 0&thread=54&id=148
--
Christian Rahmig
railML.infrastructure coordinator
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