I had trouble with directions that were not using the correct roads.
After investigation I found that these roads were not connected, as
they should be, by an intersection. In fact, there IS an intersection
but it is only connected to one of the roads (as a dead end), and not
to the other. I tried editing and moving to make it connect, without
success.
Usually, when you draw a road that ends close to another one, an
intersection is created automatically (sometimes even when there is a
small gap and even if you don't want it !). Here it's not... Why ? How
to connect the roads ???
You can find two of these intersections here :
http://www.google.com/mapmaker?hl=fr&fll=35.672145,-5.935986&fr=0.000...