Riedlingen is a small town in the South of Germany.
If you want to go north towards Reutlingen (RT), go to the hospital (at the far end of town). There is a bus stop and all cars that pass will go your direction.
If you want to go south towards Bad Saulgau eighter 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.