The car is approaching a turn on a mountain serpentineThe car is approaching a turn on a mountain serpentine
The leaves on the birches have already turned yellowThe leaves on the birches have already turned yellow
Black suv car under the bridge with the front wheels turnedBlack SUV car under the bridge with the front wheels turned
Место, где поворачивают. Полное изменение в развитии чего-н., перелом.