IfcRoadPartTypeEnum

Item	Change	Description
IFC4x2 to IFC4x3_RC1
IfcRoadPartTypeEnum	ADDED
IFC4x3_RC3 to IFC4x3_RC4
IfcRoadPartTypeEnum	MOVED	Schema changed from IFCROAD to IFCROADDOMAIN.

Semantic definitions at the type

Type definition

The predefined type container that collects all possible road facility part types together into the implemented enumeration.

Enumeration definition

Constant	Description
ROADSIDEPART	A general concept for various parts of the Roadside. NOTE Examples of roadside parts may be side slopes, roadside ditches, back slopes, bunds etc.
BUS_STOP	Lateral part of Road for stopping buses allowing them to draw out of the traffic lanes and wait for short periods.
HARDSHOULDER	A type of Shoulder that is surfaced, providing for safe use by vehicles in distress. NOTE Definition from ISO 6707-1: surfaced strip, adjacent to and abutting a carriageway, intended for use by vehicles in the event of difficulty or during obstruction of the carriageway, (Emergency lane, Service lane, US).
INTERSECTION	At-grade junction where two or more roads meet or cross. Intersections may be further classified by number of road segments, traffic controls, and/or lane design.
PASSINGBAY	A lateral part of Road that is a widening of an otherwise single lane road where a vehicle may move over to enable another vehicle to pass.
ROADWAYPLATEAU	Lateral part of Road comprising the carriageway(s), shoulders and medians.
ROADSIDE	A lateral RoadPart located along the Road adjoining the outer edges of the Shoulders. A general concept comprising the areas outside RoadwayPlateau not intended for vehicles.
REFUGEISLAND	A raised platform or a guarded area so sited in the carriageway as to divide the streams of traffic and to provide a safety area for pedestrians.
TOLLPLAZA	A part of road facility where tolls are collected for use of toll road, tunnel or bridge.
CENTRALRESERVE	Lateral RoadPart separating two carriageways of the same road or separating traffic lanes and sidewalk. NOTE Definition from ISO 6707-1: area that separates the carriageways of a road with dual carriageways, (US:Median, UK:Central reservation).
SIDEWALK	A footpath along the side of a road. May accommodate moderate changes in grade (elevation) and is normally separated from the vehicular section by a kerb. There may be a central reserve or road verge between the sidewalk and traffic lanes. NOTE Definition from ISO 6707-1: portion of a road reserved exclusively for pedestrians, (Sidewalk, Walkway, US) (footway).
PARKINGBAY	Lateral part of Road for parking vehicles. NOTE Definition from ISO 6707-1: Area intended, and usually designated and marked, for the parking of a vehicle.
RAILWAYCROSSING	At-grade crossing between road and railway.
PEDESTRIAN_CROSSING	Designated level crossing over a road for pedestrians.
SOFTSHOULDER	A type of Shoulder that is not surfaced. NOTE Definition from ISO 6707-1: strip alongside a carriageway not intended to support vehicular traffic. NOTE Definition from PIARC: Shoulder not intended to support vehicular traffic.
BICYCLECROSSING	Designated level crossing over a road for cyclists.
CENTRALISLAND	The center of a roundabout not intended for traffic, can be painted or upraised.
SHOULDER	A lateral part of Road adjacent to, and usually at the same level as the Carriageway; not intended for vehicular traffic but may be used in case of emergency. NOTE Definition from ISO 6707-1: part of a highway alongside a carriageway and at approximately the same level, exclusive of embankment or cutting slopes, (Shoulder, US). NOTE Definition from PIARC: Part of the roadway between the carriageway and the ditch or the (cutting or embankment) slope, which gives the carriageway lateral support.
TRAFFICLANE	Lateral part of carriageway designated to vehicular traffic for a particular purpose. NOTE Definition from ISO 6707-1: strip of carriageway intended to accommodate a single line of moving vehicles, frequently defined by road markings.
ROADSEGMENT	Longitudinal, linear segment of a road, either defined by uniform characteristics, or as a transition segment (e.g. number of lanes changing).
ROUNDABOUT	Type of at-grade junction at which traffic streams are directed around a circle. NOTE Definition from ISO 6707-1: portion of a road usually at a junction, on which traffic moves in one direction around a central element.
LAYBY	A lateral part of Road where vehicles can divert from ordinary stream of traffic.
CARRIAGEWAY	Unitary lateral part of Road built for traffic. Carriageway may comprise several kinds of traffic lanes and lay-bys, as well as traffic islands, and in case of dual carriageway road they are separated by central reserve. NOTE Definition from ISO 6707-1: part of the road or highway constructed for use by vehicular traffic, including auxiliary traffic lanes, passing places, and lay-bys (US:Roadway).
TRAFFICISLAND	A central or subsidiary area raised or marked on the carriageway, generally at a road junction or level crossing, shaped and placed so as to direct traffic movement and/or provide refuge for pedestrians.
USERDEFINED	User-defined type
NOTDEFINED	Undefined type.

Formal representations

XML Specification

 <xs:simpleType name="IfcRoadPartTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="roadsidepart"/>

   <xs:enumeration value="bus_stop"/>

   <xs:enumeration value="hardshoulder"/>

   <xs:enumeration value="intersection"/>

   <xs:enumeration value="passingbay"/>

   <xs:enumeration value="roadwayplateau"/>

   <xs:enumeration value="roadside"/>

   <xs:enumeration value="refugeisland"/>

   <xs:enumeration value="tollplaza"/>

   <xs:enumeration value="centralreserve"/>

   <xs:enumeration value="sidewalk"/>

   <xs:enumeration value="parkingbay"/>

   <xs:enumeration value="railwaycrossing"/>

   <xs:enumeration value="pedestrian_crossing"/>

   <xs:enumeration value="softshoulder"/>

   <xs:enumeration value="bicyclecrossing"/>

   <xs:enumeration value="centralisland"/>

   <xs:enumeration value="shoulder"/>

   <xs:enumeration value="trafficlane"/>

   <xs:enumeration value="roadsegment"/>

   <xs:enumeration value="roundabout"/>

   <xs:enumeration value="layby"/>

   <xs:enumeration value="carriageway"/>

   <xs:enumeration value="trafficisland"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcRoadPartTypeEnum = ENUMERATION OF (

 ROADSIDEPART, 
 BUS_STOP, 
 HARDSHOULDER, 
 INTERSECTION, 
 PASSINGBAY, 
 ROADWAYPLATEAU, 
 ROADSIDE, 
 REFUGEISLAND, 
 TOLLPLAZA, 
 CENTRALRESERVE, 
 SIDEWALK, 
 PARKINGBAY, 
 RAILWAYCROSSING, 
 PEDESTRIAN_CROSSING, 
 SOFTSHOULDER, 
 BICYCLECROSSING, 
 CENTRALISLAND, 
 SHOULDER, 
 TRAFFICLANE, 
 ROADSEGMENT, 
 ROUNDABOUT, 
 LAYBY, 
 CARRIAGEWAY, 
 TRAFFICISLAND, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram