ABSTRACT
With the constant popularization of cars, traffic accidents have grown in great numbers. Every year there are about 20million peoplewho are injured or disabled in traffic accidents every year; over 1million people have died, which results in more than 500 billion dollars of financial loss every year all over the world. It poses a big threat to people’s lives and property. Nowadays, traffic accidents have become the focus of the whole of society. In recent years, more than 100,000 people died because of traffic accidents each year in our country, ranking it the highest in the world, and the financial loss has reached tens of billions of dollars.
