This project presents an advanced vehicle safety system designed to prevent accidents caused by drunk driving. The system is installed inside the vehicle and operates automatically whenever the ignition is turned ON. An MQ3 alcohol sensor is used to detect the presence of alcohol in the driver’s breath. If the detected alcohol level exceeds a predefined threshold, the system immediately prevents the engine from starting by disabling it through a relay mechanism. At the same time, a buzzer is activated to provide an audible alert. In addition to this, the system uses a GPS module to obtain the real- time location of the vehicle in terms of latitude and longitude.
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SANDEEP et al. (2026) studied this question.
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