What does sign 3.31 'End of All Restrictions' (white circle with several diagonal black lines) cancel?

1. All traffic rules across the entire country.
2. Previously introduced restrictions such as overtaking prohibitions, speed limits, minimum distance, and stopping/parking restrictions introduced by specific prohibitory signs.
3. Only the requirement to yield to traffic on the right.
4. The obligation to drive on the right side of the carriageway.