If an attached implement or load projects more than 1.00 metre beyond the rear of the tractor or trailer, how must it be marked during road transit?

1. A red cloth tied to the projecting end is sufficient in all conditions
2. A 50 by 50 cm red-and-white warning panel with a reflective border, plus a red lamp and reflector in darkness or poor visibility
3. No marking is needed provided the projection stays within the width of the vehicle
4. An amber beacon on the tractor cab is sufficient