Which types of vehicles must operate distress lights, or place a flashing yellow lamp, if forced to stand on a non-urban road during “light time”?

1. A Commercial vehicles with an all up weight of more than 12,000 kg.
2. B All vehicles, except for private vehicles and passenger transportation vehicles.
3. C Commercial vehicles with an all up weight of more than 3,000 kg and buses only.
4. D All motor vehicles with an all up weight of more than 3,500 kg, buses and working vehicles.