Drones are apparently not only useful for patriotic displays in the night sky but also for reminding people to take proper safety precautions.

Video hit the Chinese internet last week of police in Fujian city of Putian using a drone to surveil one intersection and warn one motorcycle driver to put his helmet on. After hearing voices from the sky, he does so sheepishly.

Putian traffic cops starting using drones to monitor downtown roads earlier this year and say that have so far helped to identify over 2,000 traffic violations, though, to fair, that’s not exactly like finding a needle in a haystack.