Yes, Talking On A Hands-Free Cellphone While Driving Is As Bad As Driving Drunk
I protested that phoning while driving was as bad as climbing behind the wheel with a gin and tonic, but I was shouted down by my mates. It's just talking, and everyone talks while driving.
I thought everyone knew that talking on the phone is as bad, maybe worse, than drunk driving. But it turns out I'm in a minority - while everyone knows that texting while driving leads to accidents, most people believe that talking on a hands-free cellphone device is no different than chatting to the person next to you in the shotgun seat.
Most people, however, are wrong.
The available studies so far suggest that talking on the phone while driving, even hands-free, is as bad or worse than driving drunk. Indeed, hands-free talking may be worse than drunk-driving precisely because so many people are lulled into thinking it's safer.
Here's the research:
- The benchmark study comes from the University of Utah in 2006. A test of 41 adults found that driving while intoxicated was actually less dangerous than driving while talking on a hand-held phone or a hands-free phone. The study found non difference between performance in the hand-held and hands-free conditions, but cellphone users had more crashes than drunk drivers. That was a small study but its results have been repeated.
- This year, a study at Touro University of 80 drivers found that impairment between drunk drivers and hands-free cellphone drivers was roughly equal.
- In real life, 24% of all car crashes involve cellphone conversations, according to the National Safety Council.
- The National Highway Traffic and Safety Administration believes that the research shows that talking on a phone is more risky than talking to a passenger in the car with you.
- And, if you're still not convinced, the MythBusters crew put the hands-free myth to the test and found that Adam, who trying to conduct a conversation over the phone, did worse on a driving course than Kari, who drove drunk.
It is, therefore, especially scary that the Bluetooth company web site actively encourages hands-free talking-while-driving as a safety measure (because they are not hand-held devices).
It's not clear why talking on a hands-free is worse than chatting with a passenger. Theories floated so far suggest that talking to a person remotely requires greater cognitive effort than talking to a person sitting next to you. (Think about how much more effort you have to put into a cellphone conversation than a face to face one.) Also, the person next to you can respond to your driving cues and alter the workload of the conversation based on the difficulty of driving conditions - the person on the other end of the cellphone can't help you with any of that.
My friend didn't crash our van in Scotland, luckily. She did, however, take directions from a person using a GPS app on a cellphone in the passenger seat - and she blew right through a "Dead End" sign within five minutes of setting off, forcing her into an embarrassing three-point turn at the end of a cul-de-sac.
Perhaps her performance would have been better if she had been drinking and driving alone.
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