What does this traffic sign combination indicate?

The traffic sign combination indicates a warning about the presence of horse-drawn carriages on the road.

The first sign, with the exclamation mark, alerts drivers to potential hazards or unusual conditions ahead. The second sign specifies that horse-drawn vehicles, such as carts or buggies, might be present.

In German traffic law, it is important for motorists to recognize this combination as it serves to warn them to drive cautiously and be prepared to yield to horse-drawn vehicles, which have their own set of rights on the road. This means that although horse-drawn vehicles are not granted absolute priority over motor vehicles, their presence requires drivers to exercise care and attention.