 While a large percentage of drivers (95.6%) said texting or emailing while driving is unacceptable, nearly half (49%) report talking on a hand-held device and nearly 35% have sent a text or an email while driving.The US National Highway Traffic Safety Administration (NHTSA) discovered that 35 to 50 percent of drivers admit to using a smartphone while driving and 90 percent of drivers fear those who do.The Centers for Disease Control and Prevention's 2011 study found that 69% of respondent drivers between the ages of 18 and 64 admitted to calling on the phone while driving in the month before the survey and that 31% sent or read an email or text message.