Car accidents involving cars on the road injure children, but some child car injuries in Hollywood are caused by vehicles accidentally set in motion. When children are left alone in a car, they tend to explore and can manage to start the vehicle and cause it to roll forward or backward. If the car is parked on a hill or a slope, the vehicle can roll towards another vehicle, towards traffic, or towards a tree or solid object. A vehicle set in motion with child passengers can cause devastating head injuries, fractures, and other serious injuries.
Most cars made after 2006 have a BTSI (brake transmission shift interlock system), which means the driver has to engage the brake to get the car out of park. This can help prevent vehicles accidentally set in motion, but children can still accidentally set a car in motion. Older cars do not have BTSI and are a risk.