This suggestion box is for Waze Map Editor suggestions. It sounds like this suggestion should go in the Waze app suggestion box

The problem with this suggestion is that hazard reporting is generally time sensitive. Reporting police or something on the road is generally only useful when the information can be displayed immediately on the map for other Wazers behind the reporter to see. Adding the hazards retrospectively significantly reduces the value. Police regularly move, traffic hazards resolve, and traffic jams are dynamic, etc.

Though in small areas where there is no cell signal because it is blocked by builds or mountains, it might be useful. But it's a significant investment of coding time in what seems like small return. And an internet connection is required to use Waze.

This would be extremely helpful during disasters (severe storms, earthquakes, wildfires, etc.) in remote areas. In particular, Wazers could note roads closed by the disaster. Even if the report isn't available immediately, if it could upload as soon as connectivity reappears it could help editors and Wazers alike understand road conditions.