What is required if an agricultural working machine or implement exceeds an overall transport width of 3.00 metres on public roads in Austria?

1. Red-and-white warning panels and clearance lights are sufficient at any width
2. A police escort must be arranged, but no permit is needed
3. A special individual transport permit (Bescheid / Ausnahmebewilligung) from the provincial government (Landesregierung) is required
4. No permit is needed provided the speed is kept to 10 km/h