Pset_EmbeddedTrack Properties for track slab that have embedded tracks recessed into road surface. IfcSlab/TRACKSLAB IfcSlab/TRACKSLAB IsAccessibleByVehicle Indicates whether the element is accessible by a vehicle or not. HasDrainage Indicates whether the infrastructure element has drainage embedded or not. PermissibleRoadLoad Permissible traffic load for the road design.