Nowadays,more and more traffic jams and accidents happen.with the economics developing rapidly,the level of people's life have increased,lots of people in order to go to work comfortable and convenient to buy the car ,so many cars crowded in the street at the peak hours ,and the jams and accidents born.on the other hand,due to the stress of job and family,as well as many careless drivers drive the car after drinking ,the rate of occur accidents arise speedly,more and more unnecessary injured people make their families and society feel sad .so i want to say ,please obey the traffic rules,safe to a people is important ,cherish your life and other's lives!