What is the mandatory visual warning device that automotive machinery must operate when circulating on public roads in Chile?

1. A high-power white searchlight pointed at oncoming cars
2. A 360-degree rotating or flashing amber beacon (baliza ámbar/amarilla destellante) mounted at the highest point of the machine and visible from at least 100 meters in all directions
3. A blue siren light like an ambulance
4. Decorative red neon underglow lights