The sign you referred to is called "Tax station end." This sign indicates the end of the tax station area. In Germany, tax stations are typically set up in areas where vehicles are subject to particular fees, often related to roads or environmental taxes.

When you see this sign, it means that you are no longer in the tax station zone, and any specific requirements or regulations related to tax payments are no longer in effect. Drivers should be aware of any previous road signs regarding taxes or fees that were applicable within that zone before this sign.

If you have any further questions about traffic rules or need clarification on other signs, feel free to ask!