When you approach a place marked with this sign, are you obliged to exercise special caution?

Why?

The D-6b sign showing a pedestrian and a bicycle marks a pedestrian crossing alongside a cycle crossing. As you approach, you must take particular care and reduce your speed enough to avoid endangering pedestrians or cyclists.

art. 26 ust. 1 i art. 27 ust. 1 Prawa o ruchu drogowym; § 47 ust. 3 i 4 rozporządzenia w sprawie znaków i sygnałów drogowych