You would like to turn right. What is the right course of action now?

Your answer is correct. When you intend to turn right at an intersection and there is a vehicle (like the blue car) stopped in front of you at a red light, you must wait behind that vehicle. German traffic rules require you to remain behind the car in front and not to overtake or move forward to the stop line or line of sight unless the lane is clear and it is specifically allowed. This ensures order and safety at intersections, especially when following traffic signals. Always wait behind vehicles ahead at a red light and only proceed when the light turns green and the way is clear. This approach helps you avoid conflicts with other road users and follows the legal requirements.