The State Maintained Roads dataset is derived from the TopoRoad dataset that is jointly maintained by DEWNR & DPTI. The Common Road Referencing System (CRRS) assigns a unique number to all roads of interest to Department for Planning,Transport and Infrastructure (DPTI) (currently or previously maintained) and defines the start, direction and end of the road for linear referencing (i.e. driven distance) purposes. The system defines reference points with known linear distances (known as road running distance). DPTI asset information is recorded in databases referenced using CRRS standards. This data set is for the Roads Maintained by the State or Federal Government.

The State Road reserve identifies land parcels on which State Roads infrastructure is built or surrounds the road network. These areas are reserved for & used as road corridors. These areas are either described by volume and folio reference, or mapped as a buffer to road centre lines. State Roads reserve areas are routinely zoned under the Tasmanian Planning Scheme State Planning Provisions as 'Utility Zone'.

The Road Signs data set is derived from Department for Infrastructure and Transport, Asset Management, Ancillary Assets dataset. This data set is for either roads Maintained by the State or Federal Government for controlling access to or providing information on a State or Federal Government Road.

A culvert is a structure, which allows water to pass under the road. Culvert is the authoritative dataset used in the administration and management of Culverts in the State Proclaimed Road Reserve by the Department of State Growth. Culverts are utilised in conjunction with the Bridges. This is one of the key datasets for the Road Information Management System (Database) and is captured and stored using a Linear Referencing System (LRS). Culverts that have a bridge number are being stored in the same database tables as bridges because they have similar characteristics. These include Dimension, Hydraulic and Maintenance. For new structures, a culvert is a structure with a waterway area less than 3.5m^2. Small culverts are stored in the Road (Minor) Culverts table, which is located under Road Inventory.

Median barriers are longitudinal barriers most commonly used to separate opposing directions of traffic on a divided highway. This is the authoritative spatial dataset used in the administration and management of 'median barriers' and records the location of median barriers on the 'State Government Proclaimed Road' network. This is one of the key datasets for the Road Information Management System (Database) and is captured and stored with a Linear Referencing System (LRS) and a coordinate reference system.

This layer shows the location of Walls and Fences on the State Road Network. The Wall or Fence are a continuous vertical structure usually of brick, stone or wood, used as a noise barrier or boundary fence.Note that you are accessing this data pursuant to a Creative Commons (Attribution) Licence which has a disclaimer of warranties and limitation of liability. You accept that the data provided pursuant to the Licence is subject to changes.Pursuant to section 3 of the Licence you are provided with the following notice to be included when you Share the Licenced Material:- The Commissioner of Main Roads is the creator and owner of the data and Licenced Material, which is accessed pursuant to a Creative Commons (Attribution) Licence, which has a disclaimer of warranties and limitation of liability.Creative Commons CC BY 4.0 https://creativecommons.org/licenses/by/4.0/

The Road Furniture Tables store data about assets within the road reserve of the Proclaimed State Road network. Road furniture includes Retaining Walls, Median Barriers, Road Signs, Lighting, Safety Barriers, Footpaths & Kerbing.

LIST Transport Segment data is a subset of the LIST Transport Segment data and comprises transport routes with highway status. The subset has been created to provide clarity on ownership of roads (Authority). Metadata for each line is linked to the Transport Segment layer through the Feature Metadata Pointer (FMP) attribute.