IFC (IFC4X3_ADD2) under development Pset_RailwaySignalOccurrence Semantic definition

Properties common to the definition of occurrences of IfcSignal applied in railways. Applicable entities Properties

Name Property Type Data Type Description
ApproachSpeed IfcPropertySingleValue IfcLinearVelocityMeasure

The design speed of trains approaching the signal if different from the line speed.

HandSignallingProhibited IfcPropertySingleValue IfcBoolean

Indicates if hand signalling is prohibited in case of any failure.

LimitedClearances IfcPropertySingleValue IfcText

Special conditions for placing the signal post telephone: tunnels, bridges, viaducts.

NumberOfLampsNotUsed IfcPropertySingleValue IfcCountMeasure

Number of lamps which are not needed and blanked out (sealed).

RequiresOLEMesh IfcPropertySingleValue IfcBoolean

Indicates whether an OLE mesh is required to protect the signal or maintainer.

RequiresSafetyHandrail IfcPropertySingleValue IfcBoolean

Indicates whether a safety handrail is required.

SignalPostTelephoneID IfcPropertySingleValue IfcIdentifier

The identifier of the signal post telephone attached to the signal.

SignalPostTelephoneType IfcPropertySingleValue IfcLabel

Indicates the type of the signal post telephone, e.g. locked, direct line, dial phone.

SpecialPositionArrangement IfcPropertySingleValue IfcLabel

Type of special position at which the signal is placed.

HinderingObstaclesDescription IfcPropertySingleValue IfcText

Description of obstacles that hinder the visibility for the staff in the station.

SignalWalkwayLength IfcPropertySingleValue IfcPositiveLengthMeasure

Indicates the length of the walkway from signal to signal post telephone.

RequiresBannerSignal IfcPropertySingleValue IfcBoolean

Indicates whether a banner repeater signal is required.

DistanceToStopMark IfcPropertySingleValue IfcPositiveLengthMeasure

Distance from the signal to the nearest stop mark at a platform.


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