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).