Pack adds in game 42 new trailers and 119 new cargo. 
All standalone. 
Works on any maps.
For ATS version 1.39.x
Compatible with all my packs.
Models and skins by SCS Software, Giant Software, SoftLab, Astragon Software, Polygonish, Cape, Bruno77, Bora, Hardtrucksthebest, Rubberduck, Mavis, Sherry0, Tony1971, luder, bayonet, petercar379, KMN Modding, Smarty, TruckSim, Ivan, Dogebilt, Brown Modding, Technicmods, Jura2470, Dietz Modding, bansheewoj, Bcbuhler, DocElyoc, Jessy, CaMOnLy, Habdorn 
For english version you must have in mod folder two files:
trailers_and_cargo_pack_by_Jazzycat_v3.9.3_ats_base.scs
trailers_and_cargo_pack_by_Jazzycat_v3.9.3_ats_eng.scs

Version 3.9.3 - added new companies from  DLC Colorado, adapted for patch 1.39.x, improved company definitions