In this paper, a control system is designed for automatic car turning. At first, the necessary information of car turning that were collected from the traffic bylaw, car driving training centers and traffic police are explained. Then, car turning is studied experimentally on several streets with different widths. Afterward, a proper path is designed for the automatic car turning system considering traffic rules and nonholonomic constraint. Also, an appropriate sliding mode controller is designed and a novel fuzzy decision making system is proposed for the automatic car turning system. A car like mobile robot is designed and manufactured based on small scale parameters of a sedan car. Finally, the automatic car turning system is implemented on this car like mobile robot. Simulation and experimental results of the designed control system confirm the effectiveness of the proposed control system.