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Continue to ChatNew subject dataModel.ERA and 34 new data models Certificate, ContactLineSystem, ETCSLevel, Feature, FrenchTrainDetectionSystemLimitation, InfrastructureManager, InfrastructureObject, LineReference, LoadCapability, Manufacturer, MaximumMagneticField, MaximumSpeedAndCantDeficiency, MinAxleLoadVehicleCategory, NationalRailwayLine, NetElement, NetRelation, OperationalPoint, PhaseInfo, Platform, RaisedPantographsDistanceAndSpeed, SectionOfLine, Siding, Signal, SpecialArea, SpecialTunnelArea, SubsetWithCommonCharacteristics, SystemSeparationInfo, TopologicalObject, Track, TrainDetectionSystem, Tunnel, Vehicle, VehicleKeeper, VehicleType https://smartdatamodels.org/index.php/new-subject-datamodel-era-and-34-new-data-models-certificate-contactlinesystem-etcslevel-feature-frenchtraindetectionsystemlimitation-infrastructuremanager-infrastructureobject-linereference-l/