Machine vision is okay for ex post detection (e.g. https://blog.mapillary.com/tutorials/2017/08/21/mapping-traffic-signs-in-osm.html https://blog.mapillary.com/

Machine vision is okay for ex post detection (e.g. https://blog.mapillary.com/tutorials/2017/08/21/mapping-traffic-signs-in-osm.html https://blog.mapillary.com/tutorials/2017/08/21/mapping-traf... ), but realtime decision making? Nope. Never mind detecting people (RIP EH), even detecting a standardized set of basic shapes is harder in practice than in theory. As for built in sat nav - I have three (3). Their notion of current max speed matches about 80% of the time...and that doesn't always match the actual max speed in meatspace.