Department of Transport (DoT)

The Department of Transport and Major Infrastructure (DTMI) is the government agency in Western Australia focused on developing safe and efficient transport services and systems. Renamed from the Department of Transport on July 1, 2025, DTMI plays a crucial role in major infrastructure delivery and operates within the Western Australian Transport and Major Infrastructure Portfolio, collaborating with Main Roads Western Australia and the Public Transport Authority. DTMI's mission is to empower the community by planning and delivering transport solutions that enhance the lives of Western Australians.