North towards Reutlingen
If you want to go north towards Reutlingen, go to the hospital (at the far end of town). There is a bus stop and all cars that pass will go your direction.
South towards Bad Saulgau
If you want to go south towards Bad Saulgau either stay on the other side of the hospital or go through the town. If you're almost out of it and back on the big street B312 there is a bus stop next to an old house.