User:RailML Coord Documentation/IS:axleWeightChange

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axleWeightChange
 


Scheme description / Schemenbeschreibung

Position of axleWeightChange in the XML-Tree / Position von axleWeightChange im XML-Baum

Multiplicity / Anzahl

[0..∞]

Semantics / Bedeutung

A <axleWeightChange> defines a track element in which position the maximum allowed axle weight on a track changes.
 
Please, be aware of the semantic constraint(s)!

Attributes of axleWeightChange / Attribute von axleWeightChange

  • id: XML-file-wide unique, machine-interpretable identity, required for later referencing that element internally. For a detailed explanation see Dev:identities.
    XML-Datei-weit eindeutige, maschineninterpretierbare Identität, die fßr die spätere interne Referenzierung dieses Elements erforderlich ist. Fßr eine detaillierte Erklärung siehe Dev:identities.
  • code (introduced with version 2.1): Machine-interpretable string (e.g. an abbreviation) used for identification of the object across exchange partners, usecase specific uniqueness constraints may apply. Please see our description of the differences between id, code and human-readable identifiers.
    Maschineninterpretierbare Zeichenkette (z.B. Abkßrzung), die zur Identifizierung des Objekts auch bei Austauschpartnern verwendet wird, wobei spezifische Eindeutigkeitsbeschränkungen gelten kÜnnen. Bitte beachten Sie unsere Erläuterung zu den Unterschieden zwischen id, code and menschenlesbaren Kennzeichnungen.
  • name: Established, human-readable short string, giving the object a name. Not intended for machine interpretation, please see our notice on human interpretable data fields.
    Etablierte, menschenlesbare kurze Zeichenkette, die das Objekt benennt. Nicht zur maschinellen Interpretation bestimmt, siehe Hinweise zu menschenlesbaren Datenfeldern.
  • description: Human-readable, more detailed description as addition to the name. It should give additional explanations or hints to the contents of this element. Not intended for machine interpretation, please see our notice on human interpretable data fields.
    Menschenlesbare, detailliertere Beschreibung als Ergänzung zu name. Sie soll zusätzliche Erläuterungen oder Hinweise auf den Inhalt dieses Elements geben. Nicht zur maschinellen Interpretation bestimmt, siehe Hinweise zu menschenlesbaren Datenfeldern.
  • xml:lang (introduced with version 2.1): This is a unique identifier of language. It uses basically the language standard IETF BCP 47 (external link) which may be different to ISO 639-1 (external link) or ISO 639-2 (external link). For mapping hints see relation to other standards (external link).
    This defines the language used for name and description. Use Template:Ra:Tag to provide a name and/or description in other languages.


  • pos: This is the position on a track defined as distance from its start (trackBegin) regardless the "absolute mileage" in @absPos.
    Das ist die Position des Elements auf einem Track i.S. der realen Entfernung zum trackBegin. Sie ist damit unabhängig von der mit absPos modellierten Strecken-Kilometrierung.
🗒️ For an explanation of the differences between @pos and @absPos see <mileageChange>
  • absPos: This is the position on a track as absolute mileage/chainage.
    Das ist die Position des Elements im Referenzsystem der Strecken-Kilometrierung.
🗒️ For an explanation of the differences between @pos and @absPos see <mileageChange>
  • absPosOffset (deprecated with version 2.1): The semantics of this attribute aren't very clear. It seems to be redundant to the definitions with mileageChanges in "overlapping regions".
  • dir: (deprecated with version 2.5) This defines the validity of <axleWeightChange> along the track. Possible values are:
  • up This denotes the direction from the <trackBegin> to the <trackEnd> (increasing relative position values).
  • down This goes opposite to up (decreasing relative position values).
  • value
    The axle load or wheelset load describes the maximum load that the railway vehicle may exert on the line per axle. A typical value for the widely used D4 category is 22.5 tonnes.
    Die Achslast oder Radsatzlast beschreibt die maximale Last, die das Eisenbahnfahrzeug je Achse auf die Strecke ausĂźben darf. Typischer Wert fĂźr die weit verbreitete Streckenklasse D4 sind 22,5 Tonnen.
  • meterload
    The metre load describes the maximum load that the railway vehicle may exert per vehicle metre (calculated from length over buffers) on the line (especially on bridges). Typical value for the widely used route class D4 is 8.0 tonnes.
    Die Meterlast beschreibt die maximale Last, die das Eisenbahnfahrzeug je Fahrzeugmeter (berechnet aus Länge ßber Puffer) auf die Strecke (vor allem auf Brßcken) ausßben darf. Typischer Wert fßr die weit verbreitete Streckenklasse D4 sind 8,0 Tonnen.

Syntactic Constraints / Syntaktische Beschränkungen

  • id: xs:ID, required
    a string, starting with a letter (a..zA..Z) or an underscore (_),
    followed by a non-colonized and non-spaced string consisting of letters, digits, points (.), dashes (-) or underscores (_)
  • code: xs:string, optional
  • name: xs:string, optional
  • description: xs:string, optional
  • xml:lang: xs:language, language identification, optional


  • pos: tLengthM (xs:decimal, 6 fraction digits, length value measured in meter); required; must be greater than or equal to zero, less than or equal to the track's length
  • absPos: tLengthM (xs:decimal, 6 fraction digits, length value measured in meter); optional
  • absPosOffset: xs:decimal, 6 fraction digits, length value measured in meter; optional
  • dir: xs:string, generic type for more constrained direction statements: enumeration up, down; derived from tLaxDirection; optional
  • value xs:decimal, 3 fraction digits, weight value measured in metric tons; mandatory
  • meterload xs:decimal, generic type for load per meter values measured in ton per meter; fractionDigits 3; derived from tMeterLoad; optional

Semantic Constraints / Semantische Beschränkungen

Private-cloud-icon.png Semantic Constraint "IS:016":
 

must not have @dir attribute

Compare #357
 
Proposed on November 10th 2021
Approved on November 10th 2021
FIXME: add Link to discussion!
Please, recognize our guidelines on semantic constraints

Best practice & Examples / Empfohlene Anwendung & Beispiele

Not yet described. / Noch nicht beschrieben.

Notes / Anmerkungen

General information on positioning

Positive pos values describe the distance from the track's begin. The track length is derived from the pos value in <trackEnd>.

The absolute mileage refered to by absPos is usually found on technical drawings of the track layout or on mileage posts next to the track.

High loads cannot pass all tracks. axleWeightChange is especially needed for freight trains.

Open issues / Offene Punkte/Pendenzen

Not yet described. / Noch nicht beschrieben.