The air bag of the helmet will inflate when the acceleration sensors and gyroscopes detected the speed of the motorcycle, to protect the head and the neck of the riders. LED light will indicate whether the detection system is working, and the air will enter through the air valve into a pipe and send to the airbag. Airbag will then burst out beneath the helmet. Disposable small cylinders will be used as the gas cylinders, due to the rapid inflation and immediate protection to the head and neck.