A traffic jam is building up here. What is the correct procedure?

Your answer is completely correct.

In Germany, when a traffic jam starts to build up on highways or multi-lane roads, drivers are required to create an emergency lane (Rettungsgasse) to allow emergency vehicles to pass through quickly. This is done by driving as far as possible to the right in the right lane, and as far as possible to the left in the left lane.

Since you are driving on the rightmost lane here, you should move to the far right to leave a clear lane on the left side for emergency vehicles. Additionally, switching on your hazard warning lights can warn drivers behind you about the traffic jam ahead, helping to prevent sudden braking or accidents.

Driving as far to the left as possible (option 3) would block the emergency lane and is incorrect in this situation.

Understanding and applying this rule helps ensure emergency services can reach accident sites or urgent situations without delay, which is crucial for safety on German roads.