What does this traffic sign indicate?

This traffic sign indicates the start of an autobahn, which is a high-speed highway in Germany designed for motor vehicles. When you see this sign, it signifies that you are entering a roadway where there are no speed limits, although certain restrictions may apply. It is essential for drivers to be aware that autobahns have specific rules, such as the requirement to allow faster vehicles to overtake and restrictions on slower vehicles. Meanwhile, the end of an autobahn is indicated by a different sign, and a clearway for motor vehicles only would typically be marked with specific signage related to restrictions on access or type of vehicle allowed.

Understanding these signs is crucial for safe driving and compliance with traffic regulations in Germany.