++ "http://www.railsystemmodel.org/schemas/Common"
-- "http://www.railsystemmodel.org/schemas/RSM1.2beta/Common"
++ "http://www.railsystemmodel.org/schemas/NetEntity"
-- "http://www.railsystemmodel.org/schemas/RSM1.2beta/NetEntity"
++ "http://www.railsystemmodel.org/schemas/Signalling"
-- "http://www.railsystemmodel.org/schemas/RSM1.2beta/Signalling"
++ "http://www.railsystemmodel.org/schemas/Track"
-- "http://www.railsystemmodel.org/schemas/RSM1.2beta/Track"
-- "Reference point for linear referencing, corresponding to a kilometric post or milepost. Typically associated with a chainage discontinuity."
++ "Associates a location to an element of the topology, via (at most) two extremities located on this element. "
++ "Associates a location to an element of the topology, via (at most) two extremities located on this element."
-- "Associates a location to an element of the topology. "
-- "Associates a location to an element of the topology."
++ "A 2-D or 3-D physical or virtual bounded space, such as a screen or a sheet of paper on which the positioning takes place. The name can imply size and unit information, e.g. A3 landscape for 420 mm wide x 297 mm high."
-- "A 2-D or 3-D physical or virtual bounded space, such as a screen or a sheet of paper on which the positioning takes place. The name can imply size and unit information, e.g. A3 landscape for 420 mm wide x 297 mm heigh."
++ "Cartesian coordinates. The x,y, z units are defined by the associated positioning system. The user may retain only elevation (z) if needed, e.g. in conjunction with linear coordinates (distance along)."
-- "Cartesian coordinates. The x,y, z units are defined by the associated positioning system. "
-- "Cartesian coordinates. The x,y, z units are defined by the associated positioning system."
++ "From W3C: Description of date and time structured with separate values for the various elements of a calendar-clock system. The temporal reference system is fixed to Gregorian Calendar. The reference to TRS may be left out if obvious from the context."
++ "Quantity of type gradient, slope, ramp, inclination expressed as the tangent of rise/fall over distance. Uphill is positive, downhill is negative. Value in decimal form, not % or °/°°"
-- "Quantity of type gradient, slope, ramp, etc. Uphill is positive, downhill is negative."
++ "Geometric primitive for a horizontal transition curve. May be specialised to represent various types of transition curves and their associated parameters. "
++ "Geometric primitive for a horizontal transition curve. May be specialised to represent various types of transition curves and their associated parameters."
-- "Geometric primitive for a transition curves. May be specialised to represent various types of transition curves and their associated parameters. "
-- "Geometric primitive for a transition curves. May be specialised to represent various types of transition curves and their associated parameters."
-- "A line of reference combined with a single number (linear abscissa) allows positioning within a railway network. Often called chainage. The start- and end-measures represent the length of this line. The units of linear abscissa are the same as the start and end-measure. "
-- "A line of reference combined with a single number (linear abscissa) allows positioning within a railway network. Often called chainage. The start- and end-measures represent the length of this line. The units of linear abscissa are the same as the start and end-measure."
-- "Any quantity that can be expressed with a number (cardinal or ordinal)"
++ "Union=0;Derived=0;AllowDuplicates=0;Owned=0;Navigable=Non-Navigable;"
-- "Union=0;Derived=0;AllowDuplicates=0;Owned=0;Navigable=Navigable;"
++ "Union=0;Derived=0;AllowDuplicates=0;Owned=0;Navigable=Navigable;"
-- "Union=0;Derived=0;AllowDuplicates=0;Owned=0;Navigable=Unspecified;"
++ "Mapping to a linear location on the topology. The linear location can be associated with position in one or more coordinate systems."
-- "Mapping to a linear location on the topology. the linear location can be associated with position in one or more coordinate systems."
++ "Mapping to a linear location on the topology. The linear location can be associated with position in one or more coordinate systems, including elevation."
++ "A spot location where the cant applies."
-- "The spot location where the cant applies."
++ "Linestring coordinates are expressed in one Positioning System. Define more linestrings if more positioning systems become relevant. May be left empty if linestring coordinates convey sufficient information about the positioning system."
-- "Polyline coordinates are expressed in one Positioning System. Define more polylines if more positioning systems become relevant. May be left empty if polyline coordinates convey sufficient information about the positioning system."
++ "The height difference between the outer and inner rails in or in approach to a curve. The value is normally positive. It is negative in the exceptional case when the inner rail is higher. Corresponds to IFC4.3 IfcAlignmentCant attribute RailHeadDistance."
-- "The height difference between the outer and inner rails in or in approach to a curve. Positive when the rotation is anti-clockwise (seen from above) with respect to the orientation of the linear element that carries the segment. "
++ "Nano The nano level (for railway) is the level where track geometry and, in particular, curvilinear abscissas would be in agreement with on-board odometry. It is used for detailing crossing geometry, for instance. The nano level could be described as a properly attributed surveyor's map, including topological properties of the rail network in the finest possible granularity. Use cases for the Nano level would include interlocking and asset management."
-- "Nano The nano level (for railway) is the level where track geometry and, in particular, curvilinear abscissas would be in agreement with on-board odometry. It is used for detailing crossing geometry, for instance. The nano level could be described as a properly attributed surveyorXXXXXXXXs map, including topological properties of the rail network in the finest possible granularity. Use cases for the Nano level would include interlocking and asset management."
++ "Linear Referencing Method Type ; values according to ISO 19148:2021 definitions."
-- "Linear Referencing Method values refer to ISO 19148 definitions."
++ "Initial list of cant transition types. A union of the items proposed by IFC Rail and DB AG."
++ "linearScissors DE: Schere (lineare-)"
-- "Initial list of cant transition types."