What does this traffic sign indicate?

This traffic sign indicates an emergency stop and breakdown bay. On German roads, especially highways and expressways, this sign marks a designated area where drivers can safely pull over in case of a vehicle breakdown or emergency without blocking traffic. It is not a regular rest area or stopping place for breaks, and it is not an additional temporary lane. Use this bay only in emergencies, and not for regular stopping or resting. Recognizing this sign helps you react correctly during vehicle problems and stay safe on faster roads.