Its an interesting study, and I accept the premise - that ALL phone calls are distracting to varying degrees - thus I tend to avoid. I still don't accept the statement that a hands-free call is 'as dangerous' as a call taken on a handset held to the ear. Its completely self-evident, surely, that...
Again, its all about using your common sense, isn't it? I'd argue that following a good sat-nav is far safer than looking at a map on your lap, or driving around without knowing where you are going - resulting in late lane changes, etc. Obviously PROGRAMMING the sat-nav / otherwise messing with...
I mean, that is simply not true.
I try not to take any calls driving, but in the event I do, answering a call with a press of the appropriate button on the steering wheel, then holding a conversation, is really little different to talking to somebody in the back of the car.
that's wildly...