In this situation, do the signs notify you of the end of the lane on the left of the roadway?

Why?

The D-14 signs indicate that the leftmost lane ends. The left-hand arrow directs traffic into the adjacent lane to the right, while the other lanes continue.

D-14 „koniec pasa ruchu”, § 49 ust. 5 rozporządzenia w sprawie znaków i sygnałów drogowych