Under § 106 of the Austrian Kraftfahrgesetz (KFG 1967) and Directive 2003/20/EC, what is the driver's legal duty regarding passenger seat belts in a Category M2 or M3 touring coach equipped with safety belts?

1. The driver must physically fasten every passenger's seat belt individually before departing
2. The driver (or conductor/tour leader) must inform passengers of the legal requirement to wear safety belts while the vehicle is in motion (via announcement, video demonstration, or prominent pictograms at every seating position)
3. The driver is legally exempt from wearing a seat belt if passengers are unbelted
4. Seat belts are only mandatory for passengers seated in the rear five seats