When are you allowed to remain on the left-hand lane in this situation?

In German traffic regulations, the left-hand lane is typically reserved for overtaking or when vehicles have specific characteristics that allow them to remain there. The correct answer indicated that you can stay in the left lane if the vehicle, including its load, has a maximum width of 2 meters. This implies that the vehicle is within the permissible size to use the left lane safely without obstructing traffic flow.

The other option, which refers to the vehicle’s width according to its registration certificate, is also relevant. It ensures that the actual dimensions match the legal specifications, confirming that the vehicle is allowed to operate in that lane according to German laws. Therefore, selecting both parts provides a full understanding of the conditions under which a vehicle can remain in the left lane.