Changes

Heading toward San Sebastian there is a roundabout near the airport on the strada (street not the highway) you can wait at. That was much quicker for me than when I waited near the toll where the road goes in 2 directions.

Near the toll there is a traffic lights, but better is a little further on where the road forks, though its not a good place to wait as its in teh middle of the road it is possible. The 2 directions are Santander and San Sebastian.