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Cameras alone are more effective than cameras and parking sensors says survey

Rear view cameras are becoming a standard accessory on many cars sold in the U.S. The cameras have been mandated to prevent accidents where small children are backed over by inattentive drivers.
The Insurance Institute for Highway Safety (IIHS) has performed a study -- using volunteers driving 21 different vehicles in an empty parking lot -- that found backup cameras are much more effective than parking sensors while travelling in reverse.
The results of the study show that cameras would better prevent “backover” crashes into pedestrians who are in the vehicle blind spot than parking sensors alone. Oddly, the study found that while cameras worked better than sensors alone, the camera alone worked better than a combination of sensors and camera.

"Right now cameras appear to be the most promising technology for addressing this particularly tragic type of crash, which frequently claims the lives of young children in the driveways of their own homes," says David Zuby, the Institute's executive vice president and chief research officer.
During testing, researchers used a pole that had bands painted to represent children of different heights. Bands were market for the average height of children 12-15 months old, 2.5-3 years old, and 5-6 years old.
The study found that on average if the child was within about 27-feet of the back bumper, drivers couldn't see them using mirrors and looking around alone. Not surprisingly, large SUVs performed the worst in visibility, while small cars typically performed the best.
An estimated 292 people die each year and 18,000 are injured by drivers that back into them. Backup cameras reduce the rear blind zone by 90% on average according to the study.
Current legislation that would mandate the installation of backup cameras on all new passenger vehicles sold in the U.S. has been delayed.

Source: IIHS

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RE: Surprised at the results
By Sazabi19 on 3/19/2014 9:30:09 AM , Rating: 2
I think this is because the sensors are at a certain level and inexperienced people using it could be fooled by it. The lines are there sure but that is set for a certain height as well. If you see something in the mirror that looks close but hear no beeps you may be inclined to back up farther because you think surely the sonar would have picked it up and actually hit it on accident. Meanwhile with just the camera you would have seen it and just thought well, that is close enough. My old car only had a camera but my new Cadenza also has sonar, I can't tell you how often it doesn't beep until I am extremely close to an object or it is just at the wrong height. That isn't anything wrong with the car but you can't just pelt the back with nothing but sensors to cover every area. You just need to be smart about it, if it looks close, it probably is. It just takes practice. I use the cam primarily, the beeps honestly don't do much for me I can see that I am close.

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