I have to agree with the previous speaker. I think a voice warning is important. I often find that speed cameras are only indicated visually. Especially at night, I have to pay attention to the road and can't even glance at my smartphone or Android Auto display.
For this reason, I think it is important that EVERY speed camera is mentioned via voice. It would also be nice if the speed at which the speed camera flashes were also indicated. In Germany, we have speed cameras that flash at 30 km/h between 10 p.m. and 6 a.m., but during the day only at 50 km/h.

Shocked to see this hadn't been implemented from the offset. I find myself looking more at the screen for the visual speed camera alerts because there is no audible alert. This is dangerous.

It's imperative for road safety to have audible alerts for every single speed camera, especially in the UK.

Let users choose if they want to disable the alerts or have them play if they exceed the speed but as default it should be heard for every speed camera where there is an icon on screen.

It should work like the red light cameras, the icon shows and the alert is heard.. Simple.

Please fix this else I will be looking at another app which works. This should be one of the core features of a navigation app

Critical in UK as motorways have variable speed limits (ranging from 40 - 70 mph) and waze only responds to the general motorway limit (70) so, for example, 60 mph gets no audible warning (because it is below 70) but there may well be a 50mph speed limit in force (set by illuminated signs on the overhead gantry)
I'm going to have to switch to TomTom until this is fixed :-(