Section 34 of the Road Traffic Rules - Vehicle Standards and Compliance sets the point at which a projecting load must be marked. What is that threshold and marking?

1. More than 1.5 metres beyond the rear or front, marked between sunrise and sunset by a clean red flag at least 400 mm long and 300 mm wide
2. More than 1 metre beyond the rear, marked by a red flag at least 300 mm square
3. More than 2 metres beyond the rear, marked by an orange hazard panel
4. Any projection at all, marked by continuous hazard lights