Abstract: This project's major goal is "Drunk Driving Detection." Number of accidents occur nowadays because of the driver's or the person who drives the vehicles. As a result, drunk driving is a major reason of accidents in almost every country throughout the world. The Alcohol Detector in Car project is intended to confirm the safety of those who sit inside the car. The Alcohol Detection with Car Controlling project assists in controlling the vehicle if the driver has drunk alcohol. Inside the car, an alcohol breath analyser project should be installed. In another example, if the driver is not dunked when he is starting the vehicle and the engine is started, but driver starts drinking while driving, the sensor detects alcohol in his/her breath and the engine is stopped after some time, preventing the car from accelerating any further and allowing the driver to guide it to the roadside. To showcase the principle, we use an Arduino family microcontroller like Arduino uno interfaced with an alcohol sensor, an LCD display, and a dc motor in this system. So, in this case, the alcohol sensor is utilized to continuously monitor the user's breath and provide data to the microcontroller. When a high alcohol signal from the alcohol sensor is detected, the microcontroller shows an alcohol detection note on the LCD display and stops the small dc motor to illustrate engine lockup. To start the engine, the system requires a push button. If alcohol is discovered while starting the engine, it do not start at all. If alcohol is detected after the engine has started, the system locks the engine.

Keywords: Arduino UNO, MQ3 sensor, Relay, Buzzer, GPS Module, GSM module.

| DOI: 10.17148/IARJSET.2022.9504