Dev:Euroloop

Lineside Electronic Unit (LEU) ‒ a trackside electronic unit that interfaces the national trackside signalling / interlocking equipment with Eurobalise and Euroloop .

Loop ‒ track mounted device for the transmission of data between track-to-train .

Euroloop ‒ a semi-continuous, intermittent transmission system. It provides signalling in-fill information in advance as regards the next main signal in the train running direction as soon as they become available .

In ETCS Level 1 (Figure 5-1) a signal is usually connected to the Euroloop via LEU.

All the inputs are in the interlocking domain and all the outputs are in the infrastructure domain. This is why balises and Euroloops have no direct connection to the interlocking. They are defined in infrastructure.

LEU picks up information from signal lamps or signal indicators.

In special cases there are additional inputs directly from the object controller, which are considered for deriving the outputs.

The signal aspect is communicated to the driver. Train can be close to the signal or hundreds of meters away. Balise communicates aspect of the signal to the train if train is close to the signal. Euroloop communicates the aspect of a signal if the train is more far away than a balise is.

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  Figure 5-1: ERTMS/ETCS Level 1 with In-fill

<?xml version="1.0" encoding="UTF-8"?>
<railML xmlns="https://www.railml.org/schemas/3.3" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:gml="http://www.opengis.net/gml/3.2/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://www.railml.org/schemas/3.3 https://www.railml.org/schemas/3.3/railml3.xsd" version="3.3">
  <infrastructure id="is_01">
    <functionalInfrastructure>
      <balises>
        <balise id="b1" belongsToBaliseGroup="bg1"/>
      </balises>
      <baliseGroups>
        <baliseGroup id="bg1">
          <applicationType value="ETCS"/>
        </baliseGroup>
      </baliseGroups>
      <linesideElectronicUnitsIS>
        <linesideElectronicUnitIS id="leu1">
          <connectedToBaliseGroup ref="bg1"/>
          <connectedToEuroloop ref="loop1"/>
        </linesideElectronicUnitIS>
      </linesideElectronicUnitsIS>
      <loops>
        <loop id="loop1">
          <isEuroLoop countryID="64"/>
        </loop>
      </loops>
      <signalsIS>
        <signalIS id="s1"/>
      </signalsIS>
    </functionalInfrastructure>
  </infrastructure>
  <interlocking>
    <assetsForInterlockings>
      <assetsForInterlocking id="afi_01">
        <signalIndicators>
          <signalIndicator id="sigIn1"/>
        </signalIndicators>
        <signalsIL>
          <signalIL id="s1il">
            <refersTo ref="s1"/>
            <hasIndicator ref="sigIn1"/>
          </signalIL>
        </signalsIL>
        <linesideElectronicUnitsIL>
          <linesideElectronicUnitIL id="leu1il">
            <refersTo ref="leu1"/>
            <evaluatesSignalLamp ref="s1il" lampNumbers="1"/>
            <evaluatesSignalIndicatorLamp lampNumbers="1" ref="sigIn1"/>
          </linesideElectronicUnitIL>
        </linesideElectronicUnitsIL>
      </assetsForInterlocking>
    </assetsForInterlockings>
    <objectControllers>
      <objectController id="oc1">
        <controlsTrackAsset>
          <connectedTrackAsset ref="s1il"/>
          <connectedTrackAsset ref="leu1il"/>
        </controlsTrackAsset>
      </objectController>
    </objectControllers>
  </interlocking>
</railML>

Additional Information

🗒️ This segment provides background information that is not relevant for the certification process.

This section is requested by https://development.railml.org/railml/version3/-/issues/548 (link to the railML^® website) .