Police Sightings
In much the same way that Waze uses crowdsourced reporting for accidents and other road hazards, users can also report police sightings such as speed traps and other checkpoints for other Waze users to see.
While this feature has understandably proven unpopular with law enforcement — they’ve actually been fighting it for years — it doesn’t look like it’s going away any time soon. However, just keep in mind that the cops can use Waze too.