What is the right course of action now?

On German highways (Autobahn), it is generally forbidden to overtake another vehicle on the right. The standard rule is that overtaking must be done on the left. You should reduce your speed and remain in your current lane unless it is clearly safe and necessary to change lanes for overtaking. In the situation described, if traffic is moving normally and not stopped in the left lane, you cannot simply continue driving as before and pass vehicles on the right. The correct actions are to slow down and stay in your lane, making sure not to overtake on the right. This rule helps prevent accidents and ensures orderly traffic flow. Always remember: on the Autobahn, overtake only on the left, unless traffic jams or special situations (like inner-city multi-lane roads) make right-passing specifically legal.