You want to continue driving straight ahead. What is correct in this situation?

Your answer is fully correct because the rules at a junction with a stop line and priority signs must be respected strictly, especially when an emergency or priority convoy is approaching.

Here is why:

1. Allowing the convoy to pass through first is mandatory because vehicles with flashing lights and sirens have priority under German traffic rules. You must not block or delay their passage.

2. Waiting at the stop line is the correct position to yield right of way. You must stop completely where the stop line is marked before entering the junction. This ensures you don't endanger yourself or the convoy.

Crossing the junction (option 3) without yielding is not allowed because it would interfere with the priority vehicles and violate traffic laws.

Remember that priority roads and emergency vehicles always have the right of way, and stopping at marked stop lines signifies yielding to those with priority. This helps keep intersections safe and orderly.