At the Apple Worldwide Developers Conference in San Jose, Calif., on Monday, executives announced the upcoming "Do Not Disturb While Driving" feature for iPhones.
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Monitored by researchers and cameras, a study participant drives while using hands-free technology. New AAA research found that these technologies are distracting even after they're used.
Dan Campbell/American Automobile Association
A University of Utah volunteer drives through Salt Lake City's Avenues neighborhood as a camera tracks her eye and head movement. Another device records driver reaction time, and a cap fitted with sensors charts brain activity.
AAA Foundation for Traffic Safety