The sign "Two-lane road marking with distance indication - Installation on the left" indicates that there are two lanes ahead on the road. This sign is typically installed on the left side of the road to provide drivers with information about the road layout.

The distance indication usually specifies how far ahead the two lanes are located. This is important for drivers as it helps them to anticipate changes in the road conditions and to position their vehicles accordingly. Understanding this sign ensures that drivers are prepared for potential lane changes and can navigate safely through areas where the road splits into multiple lanes.

Feel free to ask if you have any further questions about German traffic signs or rules!