The invention concerns an automatic alignment system that provides controls of the angle between the tower (A) / trailer (B) and the rotation way of the wheels, and provides the performance of the automatic alignment process in accordance with these controls in vehicles that are used in heavy load carriage, and have hydro-mechanical steering system. The system includes a mechanical control system assembled on the front and rear steering centers (13, 23), inductive sensors (30, 40) assembled on the front and rear steering centers (13, 23) along with the mechanical control system, generating digital signal regarding the mechanical control system, an electric control circuit (60) providing the automatic performance of alignment by controlling the hydraulic steering system in accordance with the signals received from the mentioned inductive sensors (30, 40), and a wired or wireless remote control with a lighted warning (70) providing commands for left steering, right steering, and automatic alignment functions by working connectedly with the electric control circuit (60), all for providing the control of the alignment situation between the direction of rotation of the wheels and the tower (A) / trailer (B).