[OSM-talk] positioning of barrier = stile

[David Groom]

My query relates to where a footway joins a road and there is a stile.

say a- b is footway , and c - d is road

Should the stile be placed at "b"
           c
           |
           |
 a------b
           |
           |
           d

or should I  put in a node "e" and tag that with barrier = stile:

           c
           |
           |
 a---e-b
           |
           |
           d

I have been doing the former, but it appears this might stop routing 
applications allowing a car to travel from c - d as the barrier = stile 
"blocks" the road to vehicle transport, and so the second tagging option 
might be better.

David