This document describes a vehicle speed control and accident avoidance system based on an ARM M4 microprocessor. The system uses ultrasonic sensors to detect obstacles in front of and behind a vehicle. It is designed to automatically control vehicle speed and brake to avoid accidents at high speeds. The system was simulated, implemented on a prototype vehicle using a ARM M4 processor, ultrasonic sensors, LCD display, buzzer, and braking system. It was able to detect obstacles and smoothly apply the brakes. The system aims to save pedestrians' lives. Future work may include improving the braking algorithm, using higher range sensors, and modifying the vehicle.