SAFE DRIVE IOT: Intelligent System to Prevent Drunk Driving

Abstract: This project introduces Safe Drive IoT, a crucial vehicle security and safety system engineered to directly confront drunk driving, a leading cause of road fatalities. The core design integrates an IoT framework with essential hardware components: an alcohol detection sensor, a GPS module, a GSM communication module, and an ignition locking mechanism. The system's operation is straightforward and uncompromising: upon vehicle entry, the alcohol sensor monitors the driver's breath. If the detected alcohol concentration surpasses the safety limit, the system immediately triggers a warning via an integrated buzzer and, most importantly, activates the ignition lock, preventing the vehicle from starting.

In the event of an attempted start under intoxicated conditions, the system utilizes the GPS module to determine the vehicle's precise location and the GSM module to transmit an instant, geolocated alert (SMS) to emergency contacts and enforcement agencies. Safe Drive IoT provides a robust, real-time safety layer that effectively enforces sobriety behind the wheel, ensuring that a simple, yet life-saving, mechanism governs vehicle operation.

Keywords: Drunk driving, IoT, alcohol detection, GSM, MQ-3, GPS.