Does the signal mean that in a while the red signal comes on?

Why?

The traffic light shows red and amber together, which means green will appear next. Amber on its own indicates that red is about to appear, not this combination. While red and amber are showing together, you must still not pass the signal.

§ 95 ust. 1 pkt 2 i 4 rozporządzenia w sprawie znaków i sygnałów drogowych