IS:signal

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Missinginformation.png In this article there is information missing with respect to the attribute documentation. Please help improving the railML® wiki by filling the gaps. Possibly, you will find further details on the discussion pageFerri Leberl (talk) 16:17, 2 December 2016 (CET)


signal
 


Scheme description / Schemenbeschreibung

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

Multiplicity / Anzahl

[1..1]

Semantics / Bedeutung

A <signal> defines various "hardware parameters" of a signal.

Attributes of signal / Attribute von signal

  • 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 (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. Abkürzung), die zur Identifizierung des Objekts auch bei Austauschpartnern verwendet wird, wobei spezifische Eindeutigkeitsbeschränkungen gelten können. 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 <additionalName> 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: This defines the validity of <signal> along the track. Possible values are:
  • none: <signal> 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: <signal> is valid in both directions.
  • unknown: <signal> is restricted to a certain direction, but this direction is not known.
  • ocpStationRef: This refers to the id attribute of the associated <ocp> element.
    (introduced with version 2.1)
  • controllerRef: This refers to the id attribute of the associated <controller> element.
    (introduced with version 2.1)
  • signalBoxOcpRef: This refers to the id attribute of the associated <ocp> element.
    (deprecated with version 2.1), use controllerRef instead
  • stationOcpRef: This refers to the id attribute of the associated <ocp> element.
    (deprecated with version 2.1), use ocpStationRef instead
  • type Possible values are:
  • main: A signal which commands stop to a trains or allows to pass with maximum or reduced speed.
    Common Names: Norway: Hovedsignal
    Further Information: Section in Wikipedia page
    Ein Signal, welches entweder einen Haltbegriff (Schweiz: geschlossen) zeigt oder die Vorbeifahrt mit Höchst- oder verringerter Geschwindigkeit gestattet.
    Gebräuchliche Bezeichnung: Hauptsignal
    Weitere Informationen: Wikipedia-Artikel
  • distant
  • repeater: A signal which repeats the aspect of a distant or combined signal, often due to minimum sight to the main signal.
    Common Names: Norway: Repetersignal
    Ein Signal, welches den Signalaspekt eines Vor- oder Kombinationssignal wiederholt, meist wegen mangelnder Sicht auf das Hauptsignal.
    Gebräuchliche Bezeichnung in Deutschland: Vorsignalwiederholer, in Österreich Signalnachahmer und in der Schweiz Wiederholsignal.
    Weitere Informationen: Wikipedia-Artikel
  • combined: combination of the 'main' and the 'distant' signal type
  • shunting
  • other:anything: Any value that does not fit any value from the previous enumeration list, fulfilling the constraint: at minimum two characters, whitespace is not allowed. Please, apply Dev:usingAny accordingly.
  • function Possible values are:
  • exit: A main signal that acts as exit signal of a station.
    Ein Hauptsignal, welches als Ausfahrsignal in einem Bahnhof fungiert.
    Weitere Informationen: Wikipedia-Artikel
  • home: A main signal that acts as entrance signal for a station.
    Ein Hauptsignal, welches als Einfahrsignal für einen Bahnhof fungiert.
    Weitere Informationen: Wikipedia-Artikel
  • blocking: A main signal that acts as border between two neighbouring blocks.
    Ein Hauptsignal auf freier Strecke, welches zwei benachbarte Blöcke voneinander trennt.
    Weitere Informationen: Wikipedia-Artikel
  • intermediate: A main signal that acts as intermediate signal in a station.
    Further Information: Section in Wikipedia page
    Ein Hauptsignal, welches in einem Bahnhof weder als Einfahrsignal noch als Ausfahrsignal fungiert.
    Gebräuchliche Bezeichnung in Deutschland und Österreich: Zwischensignal und in der Schweiz Gleisabschnittsignal.
    Weitere Informationen: Wikipedia-Artikel
  • other:anything: Any value that does not fit any value from the previous enumeration list, fulfilling the constraint: at minimum two characters, whitespace is not allowed. Please, apply Dev:usingAny accordingly.
  • switchable (deprecated with version 2.2): use attribute 'switchable' in sub-elements instead
  • maskableRoute
  • maskableATC
  • virtual
  • ruleCode
  • sight
  • sigSystem
  • distNearestDangerPoint
  • trackDist
  • height

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
  • type optional
  • function 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.