Folding gooseneck trailer is a kind of front-loading trailer, different from the RGN trailer, you can load the trailer from the front of the lowbed trailer(could be flatbed trailer) but no need to dismantle the gooseneck from the trailer body. It is widely used for transporting construction machines no matter they are with tires of crawlers.
Lowbed trailer with a foldable neck makes you move construction machines easily even without crane’s lifting. When unhooking from the prime mover, the semi trailer’s neck could be folded to ground as a shallow slope for crawler crane and other machines to drive on. It is one of the popular front-loading trailers, another one is detachable gooseneck trailer.