The Australian Government's Department of Infrastructure is leveraging modern data analytics to improve its transportation policy decisions by harnessing data from various sources, including GPS pings from IoT devices and a national map of roads. By combining these datasets in Neo4j, the department can gain insights into the Australian transportation system, such as identifying areas with high safety risks and optimizing journey paths for drivers. The use of graph technology has enabled the department to analyze vast amounts of data, including 350 million GPS pings per month, and has opened up new opportunities for analytical modeling and policy development.