India is the world's largest two wheeler market. One in three households owns a two wheeler in India. A helmet can reduce shock from an accident and may save a life. Many countries apply various regulations that requires the motorcycle's rider to wear a helmet when riding on their motorcycle, so we designed this helmet in such a way that it ensures the motorcyclist wears this helmet and drives their motorcycle safely. We have used a force sensing resistor and heart rate sensor to check whether the person has worn the helmet or not. Over 1 lakh people are dying on road per year due to motorcycle accidents in India alone, so we have included automatic ambulance call service.

The railways are one of the most used means of transport globally and especially in India which is the second largest in the world. Almost more than 140 accidents per year Indian Railways are noting down and 48% of the accidents are due to wheel misalignment of the bogies. Wheel cracks are one of the foremost reasons for the misalignment, and the failure in the wheel causes the derailment of train from the rails. Therefore, periodical inspection of the wheels is necessary to avoid such accidents and disasters. Several Non Destructive Testing (NDT) methods that are quick, reliable and cost effective are utilized for the detection of defects. In this work, a comprehensive review on the numerous NDT inspection methods used for the detection of several types of cracks that occurs on the rail wheels along with their advantages and disadvantages are discussed in detail.