Coordinate positioning

Systems of this kind are based on the concept of Geometrical coordinates.
It could either be a projected X, Y, Z coordinate, a λ, ϕ, h geodetic coordinate or even an X, Y(, Z) schematic plan coordinate.
It could be read as “at coordinate X, Y, Z in the system [EPSG:xxxxx] [01/06/2014]4” [4: The exact content of the definition string of the geometric system is not yet definitve]
The model integrates a link between the linear positioning system and the intrinsic positioning system. It supports the "conversion" of an element position associated with a number between 0 and 1 to a kilometric point on its reference system.
Comment:
An example of an aggregation mechanism is depicted in Annex B.
The classes, used to define the location and positioning systems, are:
 PositioningSystem: This class defines the general concept of a Reference System.
 LinearPositioningSystem: This class defines a Linear Referencing System. It defines a starting and an ending coordinate.
 LinearAnchorPoints: this class describes the reference points in the linear reference system (Milestones, anomaly points…) and their characteristics.
 LinearCoordinate: This class defines the localization expressed in a Linear Reference System (LRS).
 GeometricPositioningSystem: This class defines a Geometrical Reference System, so it allows to localise a resource with his geometrical coordinates (x, y, z or λ, ϕ, h).
 GeometricCoordinate: This class defines the localization expressed in a geometrical (or geographical) Reference System, so it defines the coordinates (x, y, z or λ, ϕ, h).
 PositioningSystemCoordinate: This class represent a coordinate in either a geometric or linear reference system.
 IntrinsicCoordinate: This class allows associating an intrinsic coordinate to another coordinate, either geographic or linear.
 AssociatedPositioningSystem: This class allows to group couples of coordinates to define the translation parameters between an external (geometric or linear) coordinate system and the element’s intrinsic coordinate system.
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Positioning    Trackreferred positioning 