>>1355308Never heard about specific rules for full-size folders. If it folds and fits within maximum allotted luggage specs they let you through. Even if it doesn't most will turn a blind eye, I usually get away with just swinging the rear triangle around and keeping the front wheel on.
It is admittedly awkward in crowded transport as it doesn't roll when folded, but it's worth it for not having to deal with a castrated bicycle.