This is Oversize Trailers U.S.A. pack for American Truck Simulator 1.6 version.
American Truck Simulator Lowbed XL Extended trailer mod.
And here is update 2.5 for the Overweight trailer pack mod made by ghostlord.
This is update 3.0 for the Oversize USA Trailers Pack mod for ATS.
Update 2.0 for the Roadhunter 57 Overweight Cargo Trailers Pack.