The Detail Ground Survey layer contains the surveyed extents of ground survey or laser scan extracted survey used for Main Roads project planning, design, construction and asset management purposes.This data is used for road investigation, planning, design, construction and asset management.The data within this layer is continually maintained and edited on a daily basis.Data Dictionary: https://bit.ly/3ssHt0A

The point cloud layer contains the extents of mobile, terrestrial and airborne laser scanning completed to Main Roads specifications and standards for project planning, design, construction and asset management purposes.This data is used for road investigation, planning, design, construction and asset management.The data within these layers are continually maintained and edited on a daily basis.Data Dictionary: https://bit.ly/3v3V7sz

The dataset defines the extents and parameters for each of the GDA94 Landgate project grids. Project grids provide a Transverse Mercator (TM) based standard for the interchange of data for engineering, surveying and mapping projects. Within a project grid, the distance between two points on a plan will be the same as the ground distance to a defined tolerance of 20 parts per million (ppm). This makes the project grids ideal for engineering applications, facilitating the use of plane coordinate calculations for design and construction set out. © Western Australian Land Information Authority (Landgate). Use of Landgate data is subject to Personal Use License terms and conditions unless otherwise authorised under approved License terms and conditions.