Associated Press
FILE- In this Wednesday, Dec. 14, 2011, file photo, a driver uses an iPhone while driving Wednesday, in Los Angeles.  Traffic safety regulators are asking automakers to put stronger limits on how long drivers can use in-car touch screens in an effort to curb distracted driving. The voluntary guidelines unveiled Tuesday April 23, 2013, would restrict the amount of time it takes to perform a single function on the car's audio/visual systems to two seconds. (AP Photo/Damian Dovarganes, File)

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