What does a yellow diamond-shaped sign with a wide black line showing a right-angle curve and a thinner straight line extending downward indicate when placed beneath a priority sign?

1. The main priority road changes direction (curves to the right) through the intersection (Pružanje puta sa prvenstvom prolaza)
2. The road to the right is dead end (slijepe ulice)
3. All traffic must turn right; straight travel is prohibited
4. Road construction has closed the right lane