buksee's post in HCT trailers was marked as the answer
If the HCT trailer you use is a default one, so it isn't a save-edited trailer, or if it is save-edited but it is not longer than a default HCT trailer, then you are allowed to drive it anywhere. However, you have to keep in mind that you won't find any jobs for it outside of Finland unless you modify the game files, and if you teleport to a repair station your trailer will most likely spawn on top of the repair stations fence, and that can make you bug out and send you flying.
buksee's post in Is this combination possible? was marked as the answer
Where do you see any floating parts? Nothing is floating on the posted pictures...
As for the question:
On the first picture there is a standard HCT front trailer and dolly, with a B-Double front trailer on the back. As the B-Double front trailer is shorter than a standard trailer (which is on the rear of an HCT combination), this combination is a little bit shorter than the in-game HCT trailer combinations.
And as the Save editing rule states:
"...The maximum length of any trailer combination must not exceed the length of the longest default combination ("HCT" for ETS2 and "Turnpike Double" for ATS, see images below) - using a longer trailer on any combination is permitted if it is within this length.
This means, that the posted combination should be permitted (legal) and usable on the servers without any complications.