http://www.almotamar.net صحيفة إلكترونية يومية تصدر عن حزب المؤتمر الشعبي العام (اليمن) http://www.almotamar.net/4003.htm 2008-01-04 A University of Utah study found conversation -- and not the use of hands-free phone devices -- is the main distraction while driving and talking on cell phones. Cell phone usage is being blamed for several problems this week as a University of Utah study found that cell phone usage on highways causes traffic jams.