Highway Radar is a mobile application designed to help drivers stay informed about potential road hazards, speed traps, and cameras. The app collects traffic-related information from multiple sources and provides notices on potential risks on the road. It can connect to a server aggregating crowd-sourced alerts and show them on the map. The application supports alerting on speed traps and road hazards reports. It also issues audible voice warnings and optionally a beeper to grab the attention.

In some countries, aircraft traffic enforcement is in use. Highway Radar collects information about air traffic around though various ADS-B exchange sites (ADSBx, OpenSky). Then it matches every aircraft to multiple registration databases and alerts drivers only on those which can potentially do traffic enforcement. The app also aggregates data about past police and speed trap reports and estimates the risk of a given area being heavily patrolled. The app also features a heat map that shows places with especially frequent speed trap reports.

Highway Radar can warn the driver when approaching a traffic camera. This feature is available in the USA and Canada only. The app can also show you traffic jams on nearby streets and a weather radar information around you. The application can use accessibility service to launch other application on service start, including activating split-screen mode or preloading the application. The accessibility service isn't used for anything else but launching other applications upon service start, and only if Highway Radar is configured to do so. No data is accessed, collected, or shared in any way though the accessibility service.

Overall, Highway Radar is a useful application for drivers who want to stay informed about potential road hazards, speed traps, and cameras. The app collects traffic-related information from multiple sources and provides notices on potential risks on the road. It can connect to a server aggregating crowd-sourced alerts and show them on the map. The app also features a heat map that shows places with especially frequent speed trap reports. Additionally, it can warn the driver when approaching a traffic camera and show traffic jams on nearby streets and weather radar information around you.