If you reverse the direction of aa, the pink line appears to behave correctly.
Good point, I haven't tried this.
Something's not right here because there shouldn't be a node at the end of aa for the gps to route to anyway because it's a dead end. I shall investigate.
At the moment I dont understand the meaning of your sentence. In my opinion there SHOULD be a node to be able to routing to, even in an dead end. But I dont know the internas of the routing far enough.
No, I think that the nodes are how the routing jumps between ways, not how an individual way is traversed.
While writing I belive I understand: It has to do with the bidirectional routing algorithm of the garmin device. From this dead end routing always starts.
Anyway, the routing seems to be correct in my case, as the commands in the text list are correct. They say coorectly 'turn right, turn left'. Only the visual representation of the pink line gets displayed wrong.
Yes, I think it's perhaps more of a graphics bug in that it's choosing the wrong direction to draw the pink line? More thinking required... Mark