In reply to:
In other words, if there would be support for real TeleAtlas data (or similar), then there would need to be extra code for handling that -- and then in perfect world, it wouldn't ask you to turn left on freeway
I use TeleAtlas maps in my Carin and had 2 occasions so far where she asked to "Turn around if possible" on a freeway.
What exactly do you need, just a CD or the specs/format ? I must have an old Benulux CD lying around here somewhere (98) which I could mail/ISO upload to you.