What does this traffic sign indicate?

You chose the correct answer. This traffic sign indicates a filling station for LPG (Liquefied Petroleum Gas), commonly called "Auto Gas." In Germany, this sign helps drivers find fuel stations offering LPG as an alternative fuel for vehicles. It does not indicate stations for natural gas (CNG) or hydrogen. The letters "LPG" are key to recognizing that the station supplies auto gas, not other types of alternative fuels. Remember, only pick this answer when you see "LPG" on the sign.