International Journal for Advanced Research in Science & Technology

This paper presents an innovative Vehicle-to-Vehicle (V2V) communication system based on Light Fidelity (Li-Fi) technology aimed at enhancing traffic safety through advanced accident detection and prevention mechanisms.Traffic accidents remain a leading cause of death and injury worldwide, with human error, adverse weather conditions, and road hazards often contributing to accidents.The conventional methods for preventing such accidents, including passive safety features and traffic regulation systems, have limitations in responding to real-time driving conditions and situations.To overcome these challenges, the proposed system integrates the latest advancements in Li-Fi technology, which uses light signals for high-speed, secure communication between vehicles, enabling them to share critical information in real time.This approach allows for faster, more reliable vehicle-to-vehicle communication than traditional radio frequency (RF) communication systems, particularly in complex or dense traffic environments.The core of this accident prevention system is based on a variety of sensors, such as alcohol detectors, ultrasonic proximity sensors, and real-time vehicle data collectors.These sensors continuously monitor critical conditions in and around the vehicle, including the driver's state (e.g., whether the driver is intoxicated) and the vehicle's proximity to others on the road.For example, the alcohol sensor detects if the driver is under the influence of alcohol, sending an alert to the system that could trigger automatic actions, such as warning signals or even disabling the vehicle's engine if necessary.The ultrasonic sensors monitor the distance between the vehicle and others around it, detecting when the distance becomes dangerously small.In such cases, the system communicates this information to the front vehicle via Li-Fi, allowing drivers to be alerted in real-time and take appropriate actions to avoid collisions.This V2V communication system leverages the benefits of Li-Fi's high-speed data transmission to facilitate the rapid exchange of information between vehicles.If a vehicle detects an imminent collision, whether from a sudden stop, rapid deceleration,