IS:tunnelResistance

Introduction

🗒️ This article uses the unit label meter. As the reference for this Wiki is British English, the correct label is metre. Wherever the label meter occurs, it is meant equivalently to metre.

Documentation

Syntax

Autoexport from the XML-Schema for element IS:tunnelResistance of railML® version 3.3      UML-visualization of IS
Documentation	allows specifying information regarding the air drag resistance expected for the enclosing over crossing.
Subschema	infrastructure
Parents*	overCrossing
Children	resistanceFactor (0..*)
Attributes: crossSection: Used to provide the cross section area of the overcrossing. The value is provided in square meters. (optional; xs:decimal), wallConstructionType: Used to encode information about how the wall of the over crossing is constructed. (optional; xs:string; patterns: other:w{2,}; consider Use of tOtherEnumerationValue too.) Possible values: brick concrete quarrystone rock
*Notice: Elements may have different parent elements. As a consequence they may be used in different contexts. Please, consider this as well as a user of this Wiki as when developing this documentation further. Aspects that are only relevant with respect to one of several parents should be explained exclusively in the documentation of the respective parent element.

This element does not appear in railML^® 3.2 within the IS subschema. It is available only in railML^® 3.3. Do not hesitate to contact railML.org e.V. for further questions.

This element does not appear in railML^® 3.1 within the IS subschema. It is available only in railML^® 3.3. Do not hesitate to contact railML.org e.V. for further questions.

Changes 3.2→3.3

There exists an overview of all changes between railML^® 3.2 and railML^® 3.3 on page Dev:Changes/3.3.
Introduced with version 3.3.

Best Practice / Examples

This example is based on Network statement of Správa železnic (external link) section "Tunnel restrictions".

Zvěrotický tunnel

Zvěrotický tunel is a double-track railway tunnel at km 64.510 of the Prague–České Budějovice railway line (part of the IV. railway corridor ) in the Soběslav–Doubí u Tábora section and diversion in the municipality of Zvěrotice.

        <overCrossing id="ovC1">
          <name language="cz" name="Zvěrotický tunel"/>
          <spotLocation id="ovC1sp" netElementRef="ne1" intrinsicCoord="0" applicationDirection="both">
            <geometricCoordinate positioningSystemRef="gps1" x="49.26528" y="14.730566"/>
          </spotLocation>
          <spotLocation id="ovC1sp" netElementRef="ne1" intrinsicCoord="0" applicationDirection="both">
            <linearCoordinate positioningSystemRef="lps1" measure="64.510"/>
          </spotLocation>
          <length type="operational" value="370"/>
          <tunnelResistance crossSection="73" wallConstructionType="concrete"/>
        </overCrossing>

Additional Information

Notes

Example was reviewed by the coordinator (link to the railML^® website) of the Infrastructure subschema on 2025-10-24.