Explore intelligent transport systems (ITS) and open data in this comprehensive conference talk. Learn how to leverage freely available datasets from sensors, cars, and the environment to build innovative services for efficient, secure, and eco-friendly transportation. Discover the Norwegian Public Road Administration's role as a major provider of open location-based ITS data, and gain insights into accessing live traffic reports, travel times, road tolls, speed limits, and web camera feeds through APIs. Examine the development of NPRA's new web-based map solution, including challenges faced and datasets utilized. Dive into topics such as RDF, flight information, code lists, API endpoints, dynamic road data, and creating custom APIs. Gain practical knowledge on map-based traffic information systems and traditional traffic announcement services.