schwit1 writes with a followup to a story we discussed in April about how using voice-activated texting while driving was no safer than using your hands. Now, a study by AAA has found that using voice commands to send texts is more dangerous than simply talking on your cellphone. "Texting a friend verbally while behind the wheel caused a 'large' amount of mental distraction compared with 'moderate/significant' for holding a phone conversation or talking with a passenger and 'small' when listening to music or an audio book, the AAA Foundation for Traffic Safety found in a report released today. Automakers have promoted voice-based messaging as a safer alternative to taking hands off the wheel to place a call and talk on a handheld phone. About 9 million infotainment systems will be shipped this year in cars sold worldwide, with that number projected to rise to more than 62 million by 2018, according to a March report by London-based ABI Research. 'As we push towards these hands-free systems, we may be solving one problem while creating another,' said Joel Cooper, a University of Utah assistant research professor who worked on the study. 'Tread lightly. There's a lot of rush to develop these systems.' The findings from the largest U.S. motorist group bolster National Transportation Safety Board Chairman Deborah Hersman's call to ban all phone conversations behind the wheel, even with hands-free devices."