Was the path of your car proper when you turned left at the intersection?

Why?

Sign C-12 requires you to travel around the central island in the direction of its arrows. To take the road to the left of your approach, you follow the roundabout around to the appropriate exit. The path shown follows this rule.

§ 36 ust. 1 rozporządzenia w sprawie znaków i sygnałów drogowych, znak C-12