The sign you mentioned, "Parking and carpooling," typically indicates areas where parking is allowed, often specifically for carpool vehicles.

In general, parking signs in Germany provide information about where and when you can park your vehicle. If it’s specifically for carpools, this means that the spaces are reserved for vehicles that are carpooling, which can often help reduce traffic congestion and lower emissions.

Key points to remember:
- Make sure to follow any specific time restrictions indicated on the sign.
- If the sign is accompanied by any additional signs or information, such as permits or specific conditions (like payment, maximum duration, etc.), make sure to adhere to those rules.
- Parking in a carpool designated area without being part of a carpool may result in fines.

If you have more questions about parking regulations or any specific scenarios, feel free to ask!