Abstract
This study analyzes the working principle of the automatic braking system, designs an obstacle detection model using ultrasonic sensors, and models an automatic braking system using the rules in the controller. fuzzy logic for the system to detect the possibility of wheel locking and simulate hypothetical situations using Matlab - Simulink software to achieve high braking torque, optimum slip ratio and distance and shorter stopping times. The results show that the distance and stopping time are improved compared to when the controller is not used.