What must you remember in regular traffic?

The selected combination is correct because both points 1 and 2 emphasize essential aspects of public transportation regulations in Germany.

Point 1 highlights the importance of the destination and route signs showing accurate information, which is crucial for passenger safety and navigation. Passengers rely on these signs to know where a bus or train is headed, ensuring they can make informed decisions about their journey.

Point 2 addresses the visibility of the bus line number on the rear of the bus, which is important for identification and ensuring passengers can easily recognize the bus they need to board from behind.

Point 3, while relevant to bus operations, focuses specifically on lighting rules during darkness and does not pertain directly to the critical aspects of communication and identification necessary for effective public transport.

Selecting the complete and correct combination ensures that key regulatory elements are acknowledged for safe and efficient traffic flow and passenger experience.