A mystery: 5

David Pogue prepares for a panel on taxicab technology, and along the way figures out something that I never quite understood: the difference between New York’s medallion cabs and “black car” services:

There’s a good reason why there’s no still no wireless way to let taxi drivers know you want a cab. Or, rather, a bad reason.

In the 1970’s, New York made a deal with the taxi drivers and the “black car” drivers. The rule: Black cars aren’t allowed to pick up passengers spontaneously hailing on the street; those people are for the yellow cabs only. On the other hand, in New York, you can’t call ahead for a yellow cab; that would eat into the black cars’ business.

There are, in fact, smartphone apps that let you summon a cab to your position, like TaxiMagic for the iPhone. But they can’t call cabs in New York. Why? Because summoning a taxi like this is against the law. That’s not hailing; it’s prearrangement, and that’s the domain of the black cars.

I don’t know. If I were the taxi union, I’d argue that the definition of “hailing” has to change with the times. Surely sending out an “I’m here! Come pick me up” signal, by Taxi Magic, text message or whatever, is little more than a modern-day version of sticking your arm out at the curb.

I also didn’t know that there are three times as many black cars as medallion cabs, but this makes sense when you consider the particular political-economic pressures that have affected the supply of medallions over the years.