One of the main ambition of this project is to build an embedded system for instigating an alcohol detection system for the safety of women. As we all know that India especially Delhi is facing a huge problem of intolerance against Women and foreign tourist. Intolerance can happen due to many reasons, the drunken cab driver is one of the reason. As nowadays, cabs are booked online and one who have booked a cab never know what condition or state a driver is coming to pick him and if a driver is drunken can cause a problem for the customer. So to avoid this, there is the necessity for a system to check for a drunken driver. For this, we use MQ3 Gas sensor. Current from the sensor provide a linear relationship of alcohol particles from low to very high level. Then the sensor output is sent to the microcontroller for comparison. If the sensor output touches threshold value, Motor driver stopped the car’s motor. Cab and driver’s information also got transmitted to nearest police station via GSM.