The sign you mentioned is called "Direction indication by arrows" (1000-31). This traffic sign features one or more arrows pointing in different directions, indicating that drivers can proceed in the direction of the arrows shown. It serves as a guide for drivers to determine the correct path to take, especially at intersections or roundabouts.

Each arrow's direction specifies lanes or routes that are available for travel, helping to prevent confusion about the proper course of action. It's essential for drivers to follow these arrows to ensure smooth traffic flow and to avoid potential accidents or violations. Always pay attention to additional signs or signals in conjunction with this sign, as they may provide further instructions or restrictions.

If you have any other questions regarding German traffic rules, feel free to ask!