What must you be prepared for when you pass these traffic signs?

The traffic sign you provided indicates that the road may be used for winter sports, which includes activities such as skiing. The accompanying sign warns that there may be packed snow or black ice on the roadway, which poses a risk to vehicles and pedestrians.

According to German traffic regulations, drivers must be prepared for these conditions. This includes adjusting their speed and driving behavior to account for reduced traction and visibility. It is essential to recognize that while using this road, vehicles might encounter skiers and other winter sports enthusiasts, and specific caution is necessary.

When encountering such signs, drivers should be vigilant and ready to yield to winter sports users, ensuring safety for everyone. Understanding and adhering to these signs helps maintain safety on winter roads and supports responsible coexistence between different road users.