The worst part is that there was one GPS manufacturer who actually did implement the feature you're talking about: http://cdn.itechnews.net/wp-content/uploads/2011/06/Navigon-...

They were summarily purchased by Garmin and their devices are no longer for sale. The only remnant of their awesome Lane Assist Pro feature is in $30 GPS navigation apps.

It's really too bad.

But hey, if you're a clever person who knows how to code, please file a PR for this feature for Maps.me: https://github.com/mapsme/omim