Who must signal a change of direction here?

In this situation, it's important that both the motorcycle and yourself signal a change of direction. According to German traffic rules, any vehicle intending to turn or change lanes must use their turn signals to inform other road users of their intentions. This helps prevent accidents and ensures safe navigation on the roads.

Therefore, both the motorcycle and you need to indicate the direction you are moving. The motorcycle must signal for safety, while you also need to signal to alert following vehicles of your intended turn. Not signaling can lead to confusion and potentially dangerous situations. Always remember to use your signals to communicate your actions clearly to others on the road.