On a rural local road, what does Ireland's Rural Speed Limit sign generally mean from 7 February 2025?

1. Drive at 60 km/h or below, and slower when conditions require it
2. The maximum is 80 km/h unless a school or village sign is displayed
3. The maximum is 50 km/h for every bus, regardless of road conditions
4. The road has no numerical limit, so the driver chooses any safe speed