Va. Code Ann. § 45.2-918

No person shall be permitted to ride or otherwise be transported (i) on or in a dipper, shovel, bucket, fork, or clamshell; (ii) on or in the cargo space of a dump truck; (iii) outside the cab or bed of a piece of heavy equipment; or (iv) on or in a chain, belt, or bucket conveyor, unless the item described in clauses (i) through (iv) is specifically designed to transport persons.