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Health & Balance

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'Hands-Free' Devices Unsafe While Driving: Report

They cause mental distraction that can lead to crashes, experts warn

WebMD News from HealthDay

By Steven Reinberg

HealthDay Reporter

WEDNESDAY, June 12 (HealthDay News) -- Drivers who think hands-free devices for talking or texting are safer than handheld cellphones are mistaken, a new report suggests.

Instead, devices such as speech-based technologies in cars can overload drivers, taking their attention from the road and making an accident more likely, experts say.

"Hands-free is not risk-free, even though three out of four motorists believe it is," said Peter Kissinger, president and CEO of the AAA Foundation for Traffic Safety. "We know now that devices like voice-detect or voice-to-email systems can create substantial mental distractions, which can lead to degradation of driving performance."

Each day in the United States, more than nine people are killed and more than 1,000 are injured in crashes that involve a distracted driver, according to the U.S. Centers for Disease Control and Prevention.

Brains aren't wired to multi-task, Kissinger said. "It's virtually impossible for the brain to do two complex things at the same time," he said.

Multi-tasking can lead to "inattention blindness," he said, which occurs when people are concentrating on one thing and don't see other things going on around them.

"You can literally look at something and not see it," he said. "We have seen that situation occur in the real world. We have seen people being engrossed in a cellphone conversation and run right through a red light and afterwards don't even remember seeing the red light."

Released Wednesday, the new report was prepared for AAA by researchers from the department of psychology at the University of Utah.

They tested drivers in a variety of ways with a range of distractions including listening to the radio, conversing with a passenger, talking on handheld phones and using hands-free devices. The researchers looked at reaction time, both in lab simulators and on the road, Kissinger said.

The researchers found that reaction time slows and brain function is compromised as mental workload and distractions increase. Drivers check the road less and miss cues that can result in not seeing things right in front of them, such as stop signs and pedestrians.

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