This layer comprises road centrelines for all roads controlled by Main Roads (state Roads) that are assigned road numbers in the state of Western Australia. The State Road Network are attributed with a road number as identified in Main Roads' corporate Integrated Road Information System (IRIS). The purpose of this layer is to identify state roads as identified in IRIS.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/