I noticed the audable alerts on Google when using Android Auto a few weeks back, first time I recall this happening. I think it still needs some fine tuning as it was alerting (I hope!!
) to cameras on overpasses and crossing roads when I was driving on Anthony Henday. I don't think there are fixed cameras on the ring roads (stand to be corrected). If so then the algorithm needs fine tuning as it may not recognize you are not on the road it is alerting to.