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You were aware that taxi drivers aren't supposed to drive with one hand on the steering wheel and a cellphone in the other. But cabbies aren't allowed to talk on hands-free headsets either—or even wear them, even if they're not actually talking to anyone—and yesterday the Taxi and Limousine Commission approved stricter penalties for drivers who don't comply. Drivers can now lose their licenses after three violations, since research shows that drivers who talk on cellphones are four times as likely to cause a crash. And because even under perfectly ideal circumstances, sitting in the backseat of a cab is still probably the most dangerous thing you'll do all day. [NYT]