You have taken the right lane by mistake although you want to turn left. How are you allowed to proceed?

If you mistakenly take the right lane and intend to turn left, you can proceed straight ahead or to the right. According to German traffic rules, if you're in a lane not intended for your desired direction, you cannot turn left directly from that lane. Instead, you can go straight or turn right, depending on the situation.

This approach allows you to continue safely while finding an appropriate place to make the necessary adjustments to return to your intended route. The rules emphasize safety and proper lane usage to prevent accidents.