In this report the results are presented from a driving study that evaluated the mental demands of simple auditory-vocal vehicle commands using five 2013 and one 2012 model year OEM infotainment systems. Participants in this research completed a series of voice-based music functions and phone dialling tasks while driving an on-road course. Each participant drove six vehicles on a seven — nine minute loop through a residential neighbourhood in which they were periodically instructed to dial a 10 digit number, call a contact, change the radio station, or play a CD. All interactions took place using “handsfree” voice systems which were activated with the touch of a button on the steering wheel. Evaluated systems included: A Ford equipped with MyFord Touch, a Chevrolet equipped with MyLink, a Chrysler equipped with Uconnect, a Toyota equipped with Entune, a Mercedes equipped with COMAND, and a Hyundai equipped with Blue Link. Mental workload was also assessed in a single-task baseline drive and during a demanding mental math task, which respectively formed the low and high workload baselines. (Author/publisher)
Samenvatting