Development of autonomous cars is accelerating in recent years. As fully autonomous vehicles are commercializing, it is expected to bring numerous benefits as well as structural transformation in the industry site. Especially, its entry to the automobile terminal is inevitable. Therefore, this study aims to investigate the automobile terminal's current loading system focused on the worker's non-value added activities by the simulation study. Furthermore, we developed a new loading system for autonomous vehicles in Ro-Ro terminal and tested its loading time compared with the current loading system. In the simulation result, the portion of non-value added working activities was large. Also, the development of automated loading system by self-driving technology could increase productivity by 28% or further. This study used a 3D simulation tool to develop the automobile terminal and tested the autonomous loading system for the first time. This study provides significant implications for implementing self-driving technology in the upcoming automobile terminal.