The impact when a motorcyclist involves in a high speed accident without wearing a helmet is very dangerous and can cause fatality. Wearing a helmet can reduce shock from the impact and may save a life. Let's Design it. So as to overcome these problems, an Smart helmet is proposed having a control system built inside a helmet. There are many countries enforcing a regulation that requires the motorcycle's rider to wear a helmet when riding on their motorcycle. Also today accident happening due to dink and drive case more to avoid this many rules and regulation are implemented by government, but that all rules are not followed some person so that reason now day we seen may accident due drink and drive case. With this project our main agenda is to avoid drink drive by ignition control using this smart helmet. Drunken Driving: Consumption of alcohol to celebrate any instance is very common. But when it is mixed with driving it turns enjoyment to misery. Alcohol can reduces concentration of riding. It decreases reaction time of a rider body. Hands and legs take more time to react. It suppress vision due to dizziness. Alcohol dampens fear and incite humans to take risks. All these factors while driving cause accident. Avoiding safety gears and helmet: Most of the motor cycle riders doesn’t wear helmet while driving the motor cycle many studies have shown that helmets and other safety gears reduce the impact of the accident to a great extend but many did not wear even though it is made into law.