Abstract— the smart helmet presented in the project work preventsthe rider from starting the bike without it. With this helmet, you can wirelesslystart a bike without a key or a connection. Also, when the driver starts the bike, the alcohol sensor detects his breathalcohol content and disablesit. GSM and GPS are utilised to make driving safer. Vibration sensors are positioned in high-impact areasof the helmet and connected to amicrocontroller board. This means that if the rider loses control and falls, the sensors detect thisand send it to the microcontroller board, whichuses the GPS module to extract the data. An ambulance or family members are notified when the data surpasses the minimum stress limit.Keywords—RF module, accelerometer, microcontroller, Arduino,sensor