RACHEL MARTIN, HOST:
And now this. If you have a car with a voice command system, you may have had a conversation like this one from the TV show "Modern Family."
(SOUNDBITE OF TV SHOW, "MODERN FAMILY")
JESSE TYLER FERGUSON: (As Mitchell Pritchett) CD player, next track.
VOICE COMMAND SYSTEM: Say a command.
FERGUSON: (As Mitchell Pritchett) No. CD player, next track.
VOICE COMMAND SYSTEM: Air conditioner on.
FERGUSON: (As Mitchell Pritchett) Damn it.
STEVE INSKEEP, HOST:
(Laughter) While carmakers would like you to think that voice command keeps you focused on the road, two studies published this morning find that is not exactly true.
DAVID STRAYER: Not only is this technology associated with higher levels of workload, but it's also associated with higher levels of frustration.
MARTIN: David Strayer is a professor at the University of Utah who worked on both studies. He finds voice systems lead to destructive driving.
INSKEEP: Strayer says some systems work better than others. The best is Toyota's Entune. The worst is Apple's Siri.
SIRI: Sorry, I'm not sure what you said there.
MARTIN: Knock it off, Siri. You're distracting me.
INSKEEP: (Laughter).
MARTIN: Now, where were we? Oh, yeah. It's MORNING EDITION from NPR News. Transcript provided by NPR, Copyright NPR.