The sign you are referring to is the "Gas station with autogas" sign. This sign indicates the availability of a gas station that offers autogas, which is a type of fuel derived from propane and butane. Autogas is commonly used as an alternative fuel for vehicles and is often more environmentally friendly than traditional fuels.

When you see this sign, it means that you can refuel your vehicle with autogas at the indicated location. It's particularly important for drivers of vehicles that run on autogas, as it helps them easily locate fueling stations that cater to their needs. Always ensure that you are aware of the type of fuel your vehicle requires and plan your routes accordingly to find the appropriate gas stations.