Waze’s crash history alerts are assembled by a combination of crash and accident reports from Waze’s own userbase and AI algorithms. The algorithm quickly compiles the data from the reports, as well as vital factors like the road’s elevation, general traffic density, whether it’s a back road or highway, and more to alert you if a particular stretch of road has a history of incidents.
The crash history alert message is designed to be quick and unobtrusive, lest it cause an accident itself. Additionally, if the stretch of road is one that’s part of your normal driving route, you won’t receive a warning, since you’ve probably been driving on it long enough to know whether or not it’s safe.
While this feature may not be able to stop all accidents, it can hopefully keep drivers informed and aware of any potentially dangerous areas; whether said danger is due to overcrowded, aggressive traffic, steep, slippery conditions, or some other influencing factor. If you know that a stretch of road has a history of incidents, you may think twice about driving on it in order to keep yourself — and, by extension, your car — safe from harm.