I don’t know but this forum is a good place to ask http://forums.gpsreview.net/
Ask in the Garmin Auto Forum (Garmin Nuvi Forum) sub section
Also tell them which model you have and which maps you have for which country.
There seems to be Lane Assist and/or Junction View for some models/counrtries/maps.
I expect only the Garmin maps would have have such features, and not any of the openstreetmap based maps for the Garmin.