There are various hazards that exist with regard to children in and around cars.
The following statistics are found on the KidsandCars.org site with regard to “back over” accidents:
In the U.S. at least fifty children are being backed over by vehicles EVERY week. Forty-eight (48) are treated in hospital emergency rooms and at least two (2) children are fatality injured every WEEK.
• The predominant age of victims is one year olds. (12‐23 months)
• Over 60% of backing up incidents involved a larger size vehicle. (truck, van, SUV)
• Tragically, in over 70% of these incidents, a parent or close relative is behind the wheel.
Additional statistics and preventative measures can be found at their “backover” page(pdf)
As well, the site discusses the “blindzone” (pdf) concept, which is different from the common “blind spot.”