What must you be prepared for when a truck in front of you wishes to turn right into a narrow street?

When a truck signals that it will turn right into a narrow street, it's crucial to be prepared for certain actions, particularly reducing speed drastically and the possibility that the truck may swing out to the left before completing its turn.

This is based on the understanding that larger vehicles like trucks have a wider turning radius and need more space to maneuver. The truck may first move left into the lane to create the necessary angle for the turn, which can lead to the risk of cutting off vehicles higher up on the right side. By reducing speed drastically, you ensure that you have adequate time to assess the situation and react appropriately, maintaining safety for all road users.

In German traffic law, this reflects the principle of caution, which mandates that drivers must anticipate the actions of larger vehicles and adjust their behavior accordingly to prevent accidents. Therefore, recognizing both aspects as necessary precautions is essential for safe driving.