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Department of Transport and Main Roads

TMR surveying standards

Geoscience Australia and the Intergovernmental Committee on Surveying and Mapping (ICSM) established and released the new Geocentric Datum of Australia 2020 (GDA2020) to address tectonic plate shifts since the last update in the mid 1990's.
Updates to Transport and Main Road's spatial data and systems are currently underway and a full adoption of GDA2020 is currently scheduled to be completed by late 2021.
For more information and the department's transition to GDA2020 contact the project team via email at


The Transport and Main Roads surveying standards manual sets the policy and framework for engineering surveying for new and upgraded roads for the department.

Please refer to the Amendment register for details of significant changes to the manual.

The following Technical Specification and Technical Notes provides clarity and/or additional options to the manual and should be considered as part of the surveying standards:

Last updated 09 March 2023