Police in the Central Bohemian Region have recently begun using drones to monitor vehicle movements to crack down on traffic violations such as speeding and failure to maintain safe distances. The immediate operation is solely for the purpose of collecting data on traffic safety conditions, but ultimately fines will be imposed for the driver’s failure to maintain a safe distance on the road. Unlike speed violations, this requires amendments to the traffic law. Traffic police say that not keeping a safe distance is a frequent cause of accidents on Czech roads and is a rule that is ignored by many drivers.
https://english.radio.cz/police-using-drones-monitor-traffic-violations-8752858 Police monitoring traffic violations using drones