As vehicles have gotten bigger, so have the blind spots behind them. 91 children died last year in "back over" accidents.
Now you can buy cameras and sensors for your vehicle to help reduce blind spots.
Consumer Reports tested them to see if they can help spot a child before it is too late.
Alec Nelson was just 16-months-old when the unthinkable happened.
Tragically, Alec was killed by a relative backing up in a SUV. Consumer Reports has just tested a dozen back-up systems you can buy for your car. First, testers looked at sensors.
Sensors alert the driver to an object behind the vehicle by beeping.
A camera mounted system shows a wide angle view of what's behind that vehicle. But they don't beep, so you have to be looking at the monitor for it to be useful.
Testers top-rated a $800 camera. Its hitch cam's frame cam rear back-up camera. While nothing is foolproof, Consumer Reports says back-up devices can significantly reduce vehicle blind spots which can help prevent a tragedy.
Consumer Reports says, while these systems help reduce blind spots behind vehicles you can't rely solely on them.
You should always check behind your car before you get in and before you back up.