Driver-assist systems that lack user-friendliness not only cause drivers frustration, but it may diminish the system's safety benefits, according to Consumer Reports.
People confused by their driver-assist features might disregard them altogether.
"If they are not enjoyable to use in the car, if they're beeping at you incessantly, if they're doing things that are unexpected or confusing and you don't know why it's doing that, or how it's doing that, then not only is it confusing, but it can be annoying and frustrating," said Kelly Funkhouser, manager of vehicle technology at Consumer Reports' Auto Test Center.