The State Road Speed Limits dataset contains posted speed zone data relating to Tasmanian State Highways and Subsidiary Roads. It reflects the State's regulatory speed limit for each section of road, correct as of May 2020. This data set does not have any legal status, and it may not correspond with the actual speed limit posted as speed limit may have changed since the date of publication. The dataset is reviewed annually at a minimum.

This datasets presents Legal Speed Limits on state and local roads. The speed limit is the maximum speed limit allowed under the provisions of the State Traffic Act and Regulations. Road speed limits are used to regulate the speed of road vehicles. Speed limits may define maximum (which may be variable), minimum or no speed limit and are normally indicated using a traffic sign. Speed limits are set by the Commissioner of Main Roads Western Australia (Regulation 297 of the Road Traffic Code 2000) and enforced by national or regional police and/or judicial bodies. This layer shows the location of legal speed limits on all public access roads found in the Integrated Road Information System (IRIS) and is provided for information only. This data presents the speed limits of roads in Western Australia as of August 2018. For more information please visit the MRWA Open Data Portal.

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