The Bicycle traffic sign indicates a designated area for cyclists. In Germany, this sign is commonly used to inform both drivers and cyclists that a specific route or lane is reserved for bicycle traffic. It is important for motorists to be aware of such signs to ensure the safety of cyclists on the road.

When you see this sign, you should exercise caution, be aware of your surroundings, and yield to bicycles when necessary. Cyclists are expected to use these designated lanes whenever possible, and it's important for drivers to respect this space to prevent accidents.

If you have any more questions about this or other traffic signs, feel free to ask!