IS:stopPost

stopPost
 

Scheme description / Schemenbeschreibung

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

• Parent: <stopPosts> (introduced with version 2.2)
• Children: <additionalName>, <any>, <geocoord>, <states>, <validForMovements> (introduced with version 2.2), <signalRef>

Multiplicity / Anzahl

[1..1]

Semantics / Bedeutung

The element <stopPost> is used to mark a position on a track, where a train, which fulfills certain criteria, needs to stop in order to change passengers or because of other operational rules.

Attributes of stopPost / Attribute von stopPost

• 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 für die spätere interne Referenzierung dieses Elements erforderlich ist. Für eine detaillierte Erklärung siehe Dev:identities.

• code: This is a short string for typical, specific abbreviations, used in different systems with the same understanding.

• name: This is a short name for the current item.

• description: This is a more detailed description as addition to the short name. It shall allow a short overview or hints to the contents of this data set.

• 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 is used for defining name and description.

• 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: This defines the validity of <balise> along the track. Possible values are:

• none: <balise> has no direction restriction.
• 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).
• both: <balise> is valid in both directions.
• unknown: <balise> is restricted to a certain direction, but this direction is not known.

• ruleCode: code for this element in the rule book, combination of letters and numbers and space allowed, e.g. Ne5, GA, SFRS/E
• trainRelation: Reference to the part of the train from where on the stop post is valid. Normally, a stop post relates to the head of the train.

• platformEdgeRef: This refers to the id attribute of the associated <platformEdge> element.

• trainLength: Set this value if the stop post is only valid for trains with a certain train length. If the stop post is valid for trains with all lengths, don't use this attribute.

• axleCount: Set this value if the stop post is only valid for trains with a certain number of axles.

• wagonCount: Set this value if the stop post is only valid for trains with a certain number of wagons.

• verbalConstraints: Set this value if the stop post is only valid for trains fulfilling a certain verbal constraint.

• virtual: Marks a stop post being virtual if there is no physical representation along the track.

• ocpRef: This refers to the id attribute of the associated <ocp> element.

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, unknown; derived from tLaxDirection; optional
  
• ruleCode: xs:string
• trainLength optional

• axleCount optional

• wagonCount optional

• verbalConstraints xs:string, optional

• platformEdgeRef xs:IDREF, optional

• virtual xs:boolean, default: false, optional

• ocpStationRef xs:IDREF, optional

• controllerRef xs:IDREF, optional

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.

Open issues / Offene Punkte/Pendenzen

Not yet described. / Noch nicht beschrieben.