I can confirm that it is 100% not the case on iOS. There is not a way to report these things on the CarPlay app at all, and only very occasionally will there be a "speed trap" alert on Google Maps.

That's exclusively a "not implemented in CarPlay" thing, the feature is very obviously supported in iOS; it even has its own "bubble" in the main UX while navigating.

This seems to have been added in 2019: https://www.macobserver.com/tips/quick-tip/google-maps-repor...

Does CarPlay even offer UX to allow that? It looks like Apple might support it, although the directions aren't very thorough: https://support.apple.com/guide/iphone/report-traffic-incide...

In Waze + CarPlay you can definitely report events/issues directly from the mainscreen, in the bottom right.

Wait what?!? You get an audible "police ahead" alert? I'll have to review my settings if that's correct.

It's crowdsourced, so it depends on another Waze user having spotted them and put a report in the app, so the usefulness his highly dependent on how many other Waze users are in the area.

I've never received this alerts in Google Maps on iOS - I use it extensively around a major metropolitan area.