## 3 Results
This information is best available to passenger information systems for detailed navigation (in this case, from the ticket hall to the boarding point, platform 1 or 2). A directed link between physical areas (_QUAYs_, _ACCESS SPACES_, _BOARDING POSTITIONS_, or _EQUIPMENT PLACES_) is a _SITE PATH LINK_. An ordered sequence of _SITE PATH LINK_ creates a _NAVIGATION PATH_ for the passenger to move between two places, e.g., from the bus stop quay to the station ticket hall, from the ticket hall to platform 3, and so on. Based on the example description of the station in NeTEx, we can gain insights for the data mapping between the two information models by comparing it with a description in IFC (Table 1), which is also shown in Figure 6. \begin{table}
\begin{tabular}{c c c} \hline
**Target Class/Attribute (NeTEx)** & **Source Class/Attribute (IFC)** & **Description (IFC)** & **NeTEx Example Data** \\ \hline \hline  & A site is a defined area & \\  & of land, possibly & \\  & covered with water, on & \\  & & which the project \\  & & construction is to be \\  _SiteFrame_ & _lfScite_ & completed. A site may \\  & & be used to erect, retrofit, \\  & & or turn down \\  & & building(s), or for other \\  & & construction-related \\  & & developments. \\ \hline _SiteFrame.Name_ & _lfSciteName_ & \multicolumn{2}{c}{“Main train station”} \\ \hline \hline  & A building represents a & \\  & structure that provides & \\  & shelter for its occupants & \\  & & or contents and stands \\  & & in one place. The \\  & building is also used to \\  & & provide a basic element \\  & & within the \\  & spatial-structure \\  & hierarchy for the \\  & components of a \\  & building project \\  & & (together with site, \\  & storey, and space). \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Mapping from IFC to NeTEx. The conceptual model BIM (Figure 6) was created in ArchiCAD 25 and exported in IFC version 4 (IFC4). The IFC format is the international openBIM standard. In the model, the physical infrastructure of the station, consisting of the two buildings (stop places in NeTEx), was modelled. With the IFC4 specification, it is possible to describe  
\begin{table} \begin{tabular}{c c c} \hline
**Target Class/Attribute (NeTEx)** & **Source Class/Attribute (IFO)** & **Description (IFO)** & **NeTEx Example Data** \\ \hline _StopPlace.Name_ & _IcBuilding.Name_ & \({}^{*}\)Train station bus stop\({}^{*}\) \\ \hline _StopPlace.Central Location.Longitude_ & _IcSite.Ref.Longitude_ & 46.56172819 \\ \hline _StopPlace.CentralLocation.Latitude_ & _IcSite.Ref.Latitude_ & 15.6594363 \\ \hline _StopPlace.RoadAddress.RoadName_ & _IcBuilding.BuildingAddress._ & \({}^{*}\)Partizanska cesta\({}^{*}\) \\ \hline _StopPlace.Level Name_ & _IcBuilding.Storey.Name_ & \({}^{*}\)Ground floor\({}^{*}\) \\ \hline _StopPlace.TransportMode_ & _IcBuilding.Post.BuildingUse.MarketCapry_ & bus \\ \hline _StopPlace.StopPlace.Type_ & _IcBuilding.Post.BuildingUse.MarketSubFactory_ & \({}^{*}\)onstreetBus \\ \hline \end{tabular}  A space represents an area or volume bounded actually or theoretically, \begin{tabular}{c} _StopPlace.Quary_ & _IcSpace_ \\ \end{tabular}  \ \begin{tabular}{c} _IcSite._ \\ \end{tabular} 
\begin{tabular}{c} _IcSite. geometric data and its semantics together with other properties and quantity records. Geometric objects are described as IFC objects, typically with the prefix \"Ifc\", such as _IfcSite_. The syntax of the IFC format follows the IFC STEP Physical Format (SPF or IFC-SPF, based on the ISO standard for plain text representation of EXPRESS data models ISO 10303-21), which can be read as text. For example, the station area is encoded as follows:  
and the staircase is coded as:  
Both examples, site and staircase, describe top-level information of the object such as the name ('main station') and the location of the site (latitude in degrees (46,33,42,221484), longitude in degrees (15,39,24,997061)). The rest of the properties and quantities are broken down into several aggregations.