As cars become more common, so do auto accidents.

There is an interesting point made in an article from The Economist:

Every 30 seconds someone, somewhere, dies in a road crash, and ten are seriously injured. The toll is rising: the World Health Organisation (WHO) expects the number of deaths globally to reach nearly 2m a year by 2030, up from 1.3m now. But the pain will fall far from equally. Rich countries are making roads safer and cutting casualties to rates not seen for decades, despite higher car use. Poor and middle-income ones will see crashes match HIV/AIDS as a cause of death by 2030 (see chart). In the very poorest, the WHO expects deaths almost to triple.

While death rates from communicable diseases such as malaria and TB are decreasing, those from automobile accidents are increasing in developing countries. Of course, that means that injuries and long term disability rates are also increasing related to auto accidents. Moreover, there is a huge financial cost.