This document proposes a system to prevent vehicle accidents using an Arduino microcontroller. It uses an ultrasonic sensor to detect obstacles and warn of potential collisions. A temperature sensor monitors engine heat to alert the driver if overheating occurs. A speed sensor detects if the vehicle exceeds 50 kmph and notifies the driver. The system aims to reduce accidents by avoiding collisions, preventing engine damage from overheating, and alerting drivers to reduce speed. It was found to accurately sense distances, temperatures, and speeds, and provide warning messages and sounds to drivers as needed.