Road segment represents the centreline of a section of road having common attributes and terminating at its physical end or to an intersection with another road at the same grade or level. It is an open way for the passage of vehicles, person or animals on land. This data is held and maintained within the NSW Digital Topographic Database (DTDB) and includes key attributes such as road name, type, surface, lane count and on-type (e.g. onground, onbridge, intunnel etc).

Various facilities associated with the Railway dataset. The following is a ‘facility point’ being a point feature class defining a facility related to transport. Railway Station: a structure beside a railway line with facilities for passengers and freight. The following is a ‘traffic control device’ being a point feature class representing structures which control movement of traffic along a road. Level Crossing: a place where a road and railway intersect at the same level.

Various structural elements are associated with the Railway dataset. The following are ‘crossings’ being a point feature class representing structures that facilitate the crossing of a road or railway over, under or through another feature. Rail Bridge: a structure erected over a depression or obstacle to carry a railway. Rail Tunnel: an underground or underwater railway passage. Rail Culvert; a masonry conduit which serves as a channel-crossing for water or a transport network beneath a railway. Note the ‘ontype’ attributes of railway features which have an obvious topological link to these features.

Various facilities associated with the Road dataset. The following are ‘facility points’ being a point feature class defining a facility related to transport. Bus Interchange: a connection or terminal point for long distance bus travellers or other major transport interchange. Parking Area: an area set aside for the parking of motor vehicles. The following are ‘traffic control devices’ being a point feature class representing structures which control movement of traffic along a road. Level Crossing: a place where a road and railway intersect at the same level. Toll Booth: a structure on a road which requires the user to pay a toll or fee to use the road. Impediment: a structure generally associated with a road that controls or varies the normal travel of vehicles or pedestrians. Roundabout: the notional midpoint of a roundabout that has been constructed to allow smooth integration of traffic. Gate: an opening in a fence or wall for the passage of vehicles or animals and which may contain a device to limit passage. Cattle Grid: an open floored structure designed to be crossed by motor vehicles.