David Strayer, University of Utah (IMAGE) University of Utah Caption On behalf of the AAA Foundation for Traffic Safety, University of Utah psychology professor David Strayer has conducted new research into the effects of mental distractions on a person's ability to drive safely. In two new studies, Strayer and colleagues found that giving voice commands to almost all smartphone personal assistants and in-vehicle infotainment systems is highly distracting, and that it takes drivers up to 27 seconds to regain full attention after using the devices. Credit AAA Foundation for Traffic Safety Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.