Do I need a Second Man?

If if the maximum length for a rigid vehicle is 12.2m. Can I exceed this if I take a drivers mate? If so what is the max overhang I am allowed? Is it 10’ (3m)?

Anyone have any ideas or any pointers to a site?

From ancient memory banks, it is 2m overhang at the front, and 3m overhang at the rear before it becomes ‘notifiable’.

Although I think Con & Use in relation to AIL’s changed in recent years.

Try searching Motor Vehicles (Construction & Use) + overhang + UK