The basic idea behind "Smart Helmet" is that it could save many precious lives daily by avoiding fatal injuries caused during road accident and the smart helmet mechanism forces any rider to wear this protective helmet. This is also mentioned as 'Your helmet is your key' which means that the vehicle will only work with the helmet put on. Another major reason for accidents to take place is because the rider is drunk . To prevent this, the helmet consists of sensors that recognize the drunken condition of that person and thus it does not allow the bike to start or can say ignite the engine. Theft is one of the major problems everyone faces nowadays and therefore, to reduce the theft possibility, the helmet is connected to the vehicle and a mobile phone all the time. Hence this helmet covers most of the problems one faces and keeps us secure and the vehicle safe.