Although roads are getting safer in many developed countries, traffic accidents are a rising and underestimated killer worldwide, say researchers who have surveyed dozens of recent traffic studies.
In some developing countries, including China, death rates on roadways have at least tripled in recent decades as new fleets of cars have taken to routes that were already crowded with pedestrians, bicycles, and motorcycles. In other places, missing data rule out precise assessments of the toll.
A comprehensive study blamed 1.2 million deaths and 50 million injuries on road accidents in 2002. High-income European countries had the lowest traffic-related death rates—11.0 deaths annually per 100,000 people—while poorer regions of Africa and the eastern Mediterranean reported annual rates as high as 28.3 deaths per 100,000 people.