Your autocar limiter is set to 100 km/h and you enter a signed 70 km/h roadworks zone on a motorway. What speed applies?

1. 70 km/h, because the signed limit is lower than the limiter
2. 100 km/h, because a limiter setting overrides temporary signs
3. 90 km/h, the ordinary bus motorway limit
4. 120 km/h if cars are still doing that in the left lane