Development of a Smart Car Incorporating Alcohol Detection and Accident Prevention Systems

Abstract— The proposed Smart Car is an innovative autonomous vehicle designed to enhance road safety through intelligent obstacle detection and alcohol sensing mechanisms. The system integrates ultrasonic sensors for obstacle avoidance and an alcohol sensor for detecting driver intoxication. When alcohol is detected, the car automatically stops, preventing potential accidents. The vehicle operates autonomously using an Arduino Uno microcontroller that processes real-time sensor data to make navigation and safety decisions. Ultrasonic sensors continuously scan for obstacles and measure distance to enable safe maneuvering, while an alcohol sensor monitors the driver's breath. The system also includes a temperature sensor for battery thermal monitoring; if overheating occurs, an automatic cooling mechanism activates to prevent thermal runaway. Additional modules such as a motor driver, LCD display, and buzzer ensure reliable control, feedback, and alerts. By combining driver condition monitoring and collision prevention in a single, low-cost system, this project offers a practical approach to improving vehicular safety, especially in autonomous and semi-autonomous environments. Top of Form Keywords— Smart Car, Alcohol Detection, Obstacle Avoidance, Autonomous Vehicle, Arduino Uno etc.