It appears that Waze is attempting to use these notifications as a way to prevent future accidents on the road. By alerting drivers to potentially dangerous conditions and providing them with information about the duration of time they may be in these areas, the app aims to prepare and protect drivers as they navigate through an environment that may already be prone to accidents.
It seems that the hazardous road warnings are not displayed on streets that a driver typically uses in their daily route. However, if there are multiple red-marked roads in a specific area, Waze will only send a single notification to avoid overwhelming the user with too many alerts. If a user is not interested in receiving these notifications, they will have the option to opt-out by going to the "Notifications and Reports" section in the app's settings and selecting "History of traffic accidents" once this feature becomes widely available.
At this time, there is no information available on when this new feature will be made available to all users.
Waze is a navigation app that helps people find the best route to their destination. It uses real-time traffic information and user-reported data to provide updates on traffic conditions, accidents, and other road hazards. Waze is popular because it helps people avoid getting stuck in traffic and arrive at their destination more quickly and efficiently. Additionally, users can report incidents, such as accidents and police speed traps, to help other Waze users avoid them.
Source: Android Central, Geektime