SMART VEHICLE-TO-VEHICLE COMMUNICATION SYSTEM USING LI-FI

Abstract This design presents an innovative Vehicle-to-Vehicle (V2V) communication system utilizing Li-Fi technology to enhance road safety through real-time driving behavior monitoring and alert mechanisms. Each vehicle unit is equipped with an ESP32 microcontroller as the central controller, which gathers data from various sensors including an alcohol sensor to detect drunken driving, an MPU6050 sensor to monitor rash driving behavior through acceleration and orientation analysis, and an SOS button for emergency alerting. An I2C-based LCD display is used in each vehicle to show real-time parameter values for the driver. The system also includes an APR voice module to provide audible alerts to the driver, improving the response time in critical situations. To support safety in congested environments, the system uses ultrasonic sensors to detect nearby vehicles and reduce collision risks. Li-Fi, a high-speed, light-based data transmission method, is used for direct communication between vehicles, enabling quick sharing of alerts such as emergency situations or erratic driving behavior. When an abnormal condition like high alcohol level or sudden movements is detected, the system sends a warning to nearby vehicles through Li-Fi, triggering visual and voice alerts. This smart integration of IoT components creates a responsive, interconnected V2V system aimed at reducing road accidents and improving driver awareness, especially in critical driving conditions. Keywords V2V, Li-Fi, Sensors, ESP32, Monitoring.