What does a circular sign with a red border containing two cars facing opposite directions separated by red and black vertical arrows mean?

1. Two-way overtaking allowed for vehicles traveling above 40 km/h
2. Mandatory dual carriageway ahead with separated median strip
3. Yield priority to oncoming traffic on a narrow carriageway (Përparësi për mjetet që vijnë përballë)
4. Priority over oncoming vehicles when traveling in the direction of the red arrow