Are you allowed to switch on emergency lights when you are driving a hauled vehicle?

No, switching on the hazard warning lights in a towed vehicle is prohibited because it makes it impossible to signal the intention to change direction. According to Art. 31 of the Road Traffic Act, a towed vehicle must be marked at the rear on the left-hand side with a reflective warning triangle. Additionally, in conditions of insufficient visibility, the position lights must be switched on.