What must you anticipate in this situation?

In this situation, German traffic rules highlight the effect of strong crosswinds, especially when driving near large vehicles like trucks.

First, because of the wind pressure, your vehicle may be pushed towards the left side (away from the truck), as open space on that side allows the wind to exert more force (option 1). Then, as you enter the area right next to the truck, the truck shields you from the wind, creating a "wind shadow." Here, your vehicle may be pushed back to the right (towards the truck) because the wind pressure is lower in this protected zone (option 2).

The truck itself is large and stable, so it is unlikely to be pushed rightwards by the wind in this scenario (option 3 is incorrect).

Understanding this helps you anticipate these side forces and maintain control by adjusting your steering gently to counteract the wind gusts and changes as you pass the truck.