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Re: More detailed 'speed change' definitions [message #311 is a reply to message #301]

Sat, 16 June 2012 18:59

Christian Rahmig
Messages: 151
Registered: January 2011

Senior Member

Hello Susanne et.al.,

> We discussed some open issues of the upcoming speed change / speed
> profile enhancements (for railML version 2.2) afterwards the todays'
> railML meeting in Dresden. I conclude the outcomes herein.
>
> [directions in speed changes]
>
> <speedChange> elements offer the "dir" attribute with the enumeration
> values "up" and "down".
>
> (See also Trac ticket #145 [1] for renaming the enumeration values with
> next major release.)
>
> The current enumeration value "both" is marked deprecated for more
> clear semantics.

agreed.

> [position of speed changes in the XML tree]
>
> <speedChange> elements stay where they are currently defined.
>
> <speedProfile> elements are seperated from the<tracks> and (with
> respect to its container element<speedProfiles>) a direct
> child of the<infrastructure> element.

agreed.

> [different run history]
>
> The actual speed aspect depends not only on the rollingstock
> characteristics as mentioned in the previous postings. It sometimes
> depends on the route through a "branching station" from a macroscopic
> point of view.
>
> Given the route between the neighbouring stops/stations (ocps) the
> different speed aspects at the same track for the same rollingstock
> characteristics may be defined.
>
> So far we would need two attributes for refering to<ocp id="">
> elements at the<speedProfile> element. "from" and "to" don't help in
> this case because they also apply to the other running direction which
> would be confusing.
>
> How about the attributes "ocpRef1" and "ocpRef2"? Or "neighbour1" and
> "neighbour2"? Or "neighbourOcpRef1" and "neighbourOcpRef2"?
>
> Any other (even better) naming suggestions?

c.f. ongoing discussion in thread "speed profiles for generl directions" [2]

> [train relation]
>
> What is a real use case for the enumeration value "midOfTrain"? Are
> there any speed aspects that are valid since half of the train passed
> its defined position?
>
> If it is not the case, we would suggest not to define it.

c.f. ongoing discussion in thread "train relation" [1]

> [minimum percentage of brake power]
>
> At some railway infrastructure companies the minimum percentage of
> brake power can't be directly calculated by means of physics. It is
> somehow defined by some legal body.
>
> Therefore we would suggest an additional attribute
> "minimumBrakePercentage" for this value in the<speedProfile> element.

c.f. ongoing discussion in thread "speed profiles and braking
percentages" [3]

[1]
http://www.railml.org/forum/ro/index.php?group=1&offset= 0&thread=45&id=121

[2]
http://www.railml.org/forum/ro/index.php?group=1&offset= 0&thread=46&id=122

[3]
http://www.railml.org/forum/ro/index.php?group=1&offset= 0&thread=44&id=120

---
Christian Rahmig
railML.infrastructure coordinator

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[Message index]

		More detailed 'speed change' definitions By: Susanne Wunsch railML on Fri, 18 November 2011 10:29
		Re: More detailed 'speed change' definitions By: Christian Rahmig on Mon, 19 December 2011 21:01
		Re: More detailed 'speed change' definitions By: Carsten Weber on Tue, 20 December 2011 23:53
		Re: More detailed 'speed change' definitions By: Susanne Wunsch railML on Thu, 05 January 2012 12:40
		Re: More detailed 'speed change' definitions By: Carsten Weber on Mon, 09 January 2012 15:35
		Re: More detailed 'speed change' definitions By: Susanne Wunsch railML on Mon, 09 January 2012 17:37
		Re: More detailed 'speed change' definitions By: Carsten Weber on Wed, 11 January 2012 20:42
		Re: More detailed 'speed change' definitions By: Susanne Wunsch railML on Sat, 14 January 2012 00:06
		Re: More detailed 'speed change' definitions By: Carsten Weber on Mon, 23 January 2012 17:02
		Re: More detailed 'speed change' definitions By: Christian Rahmig on Wed, 25 January 2012 22:08
		Re: More detailed 'speed change' definitions By: Susanne Wunsch railML on Tue, 24 April 2012 23:31
		Re: More detailed 'speed change' definitions By: Christian Rahmig on Sat, 16 June 2012 18:59
		Re: More detailed 'speed change' definitions By: Susanne Wunsch railML on Fri, 29 June 2012 10:40
		Re: More detailed 'speed change' definitions By: Dirk Bräuer on Fri, 29 June 2012 19:50
		Required 'id' attributes (was: More detailed 'speed change' definitions) By: Susanne Wunsch railML on Wed, 07 November 2012 14:25
		Re: Required 'id' attributes (was: More detailed 'speed change' definitions) By: Dirk Bräuer on Thu, 08 November 2012 21:06
		Logical constraints for speed profile characteristics (was: More detailed 'speed change' definitions) By: Susanne Wunsch railML on Mon, 12 November 2012 13:07
		Blocking of infrastructure elements (was: More detailed 'speed change' definitions) By: Susanne Wunsch railML on Mon, 12 November 2012 13:11
		Re: Blocking of infrastructure elements By: Christian Rahmig on Mon, 02 December 2013 11:43
		Obligational stop (was: More detailed 'speed change' definitions) By: Susanne Wunsch railML on Mon, 12 November 2012 13:17
		Re: Obligational stop By: Susanne Wunsch railML on Mon, 11 March 2013 14:38
		Re: Obligational stop By: Dirk Bräuer on Tue, 12 March 2013 20:35
		Re: Obligational stop By: Susanne Wunsch railML on Tue, 12 March 2013 22:57
		Re: Obligational stop By: Dirk Bräuer on Wed, 13 March 2013 21:09
		Re: Obligational stop By: thomas.kauer on Fri, 15 March 2013 15:38
		Mandatory stops e.g. before a level crossing (was: Obligational stop) By: christian.rahmig on Wed, 05 April 2017 13:48
		Re: Mandatory stops e.g. before a level crossing By: Dirk Bräuer on Thu, 18 May 2017 18:56
		Re: Mandatory stops e.g. before a level crossing By: christian.rahmig on Mon, 12 February 2018 13:39
		Re: Mandatory stops e.g. before a level crossing By: Dirk Bräuer on Wed, 14 February 2018 10:38
		Re: Mandatory stops e.g. before a level crossing By: christian.rahmig on Wed, 30 May 2018 14:04
		Re: Mandatory stops e.g. before a level crossing By: Thomas Nygreen JBD on Mon, 04 June 2018 12:41
		Re: Mandatory stops e.g. before a level crossing By: christian.rahmig on Mon, 04 June 2018 13:00
		Re: Mandatory stops e.g. before a level crossing By: Dirk Bräuer on Mon, 03 September 2018 19:28

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