Originally Posted by
DaveReidUK
I don't know about Geneva, but Basel/Mulhouse airport has separate exits to the two countries.
Indeed - along with the customs road that begins around 100m into Swiss territory and has no exits between there and the airport. I haven't been through the 'French side' of Geneva but I believe the set-up is similar, with a road leaving the airport and joining the French network just beyond the customs checkpoint.