Automobile

Other negative effects
Residents of low-density, residential-only sprawling communities are also more likely to die in car collisions which kill 1.2 million people worldwide each year, and injure about forty times this number. Sprawl is more broadly a factor in inactivity and obesity, which in turn can lead to increased risk of a variety of diseases.
Millions of animals are also killed every year on roads by automobiles—so-called Roadkill.