This document provides a user manual for an 18.75m car carrier trailer that can be attached to a PRIMA 4028.S tractor. It details the various deck positions and how they can be adjusted for different vehicle types. It also describes the hydraulic and brake controls, ABS system, electrical connections and provides instructions for operating, loading and coupling/decoupling the trailer. Diagrams and specifications are included to illustrate how to configure the decks and use the trailer safely and efficiently for transporting multiple vehicles.