You want to turn left. Who is required to wait?

You answered correctly: when turning left, you have to wait. In Germany, if you are turning left on a country road and there is oncoming traffic, you must give way to vehicles coming from the opposite direction – in this situation, the blue vehicle has the right of way and you must wait. This is a basic rule for left turns: oncoming traffic always has priority unless otherwise indicated by traffic signs or signals. Remember this rule for similar situations in future questions and real-life driving.