In update 1.45, two types of tank trailers will be added to the game – fuel tanks and silos (dry cargo trailer), as reported by the developers in their blog.
Fuel tanks will be used for the transport of flammable liquids and have only a single (classic) design. Various bumpers, mudguards, fenders and more will be available as tuning.
Sand, concrete or grain will be available for delivery by trailers for the transport of dry goods. Single, double, B-double and HCT variants will be available. Various bumpers, mudguards, fenders, markers, etc. will also appear for personalization.
In the future, the developers promise to add more types of tank semi-trailers for purchase.