Rear impacts (1,824,000 crashes, 29.6% of all US crashes, 5.4% of US fatal crashes) Angle or side impacts (1,779,000 crashes, 28.9% of all US crashes, 20.7% of US fatal crashes) Run-off-road collisions (992,000 crashes, 16.1% of US crashes, 31.7% of US fatal crashes) Collisions with animals (275,000 crashes, 4.5% of US crashes, 0.4% of fatal crashes) Rollovers (141,000 crashes, 2.3% of all US crashes, 10.9% of US fatal crashes) Head-on collision (123,000 crashes, only 2.0% of all US crashes, but 10.1% of US fatal crashes) Collisions with pedestrians and bicyclists (114,000 crashes, only 1.8% of US crashes, but 13.5% of US fatal crashes) Back-up collisions killed 221 people in the US in 2007, and injured about 14,400. This is one of the most common types of non-traffic auto collision in which road workers and children 15 and younger are killed.[16][17]