How to disable speed camera notifications in maps?

Google maps has recently introduced speed camera notifications, and I had the misfortune of experiencing these for the first time yesterday. Personally I find the audio "speed camera ahead" very annoying and distracting, and would like to disable it. I don't mind the little beep or the icon on the map, but I'm also quite happy to lose them if it means getting rid of the spoken announcement. However much I search, I can't find an option to remove this, or any information on the internet about disabling this. Is it possible?