Credits
RDForum community
RDForum is a discussion forum centered around radar detectors, laser jammers, police speed enforcement tactics, and related information. RDF community was the first to beta-test the application and provide very valuable feedback.
ADS-B Exchange
ADS-B Exchange is a world's largest co-op of unfiltered flight data and an excellent service collecting and sharing data from ADS-B aircraft transponders across the globe. ADSBx helps us getting real-time aircraft positions.
OpenSky network
The OpenSky Network is a community-based receiver network which continuously collects air traffic surveillance data. They also have a releasable aircraft database which significantly helps us with filtering out safe aircraft.
POI-factory
POI factory provides awesome databases of speed cameras for USA and Canada. Highway Radar uses it to warn drivers about approaching traffic cameras.
Support author
Highway Radar is a non-commercial application, so you don't need to pay anything for using it. However, if you wish to support the development of this application you're welcome :)