tbd when you'll have the option of sharing the data with your insurance company
"You probably know the feeling. You might be driving on a business trip or a road trip. Or you might be driving down a road you’ve driven at least a thousand times. Suddenly it happens. You look at your dashboard and think to yourself, “What’s the speed limit on this street?” No need to worry, we got this.
[...] To see speed limits you don’t need to change a thing. If you’re driving over the limit, a visual alert will appear on the Waze speedometer. It will stay there until your speed drops below the limit."Waze - Official Blog: Avoid Tickets and Stay Informed with New Waze Speed Limits Feature