A couple years ago, the city allowed independent car services to paint their cars green and take street hails. They previously did this, of course, but it wasn't legal. And of course, not every "black car" became a green cab, so this still happens. It's the standard way to get around the outer boroughs of New York.
I watched a very common event unfold the other day in Brooklyn Heights. A woman hailed a green cab. It pulled over and the driver opened the window, asking "where to?" The woman mentioned an address in Manhattan. The driver said, "sorry, green cabs can't go to Manhattan" and drove away.
That is 100% false. Like yellow cabs, green cabs have to take you anywhere in the five boros, but they're reluctant to take you to Manhattan because they aren't allowed to pick up fares there. They have to drive back to Brooklyn empty and not make any money, so they lie to customers to avoid that. The end result is that you still can't get a taxi in most of New York City, at least one that will pick you up near where you live and take you exactly where you want to go.
The "ridesharing services" rectify this problem; I've never had an Uber driver refuse to take me anywhere. If the licensed taxis want to be free from competition, they need to follow their own rules.
Anyway, this Forbes article about green cabs tells the exact same story: http://www.forbes.com/sites/johngiuffo/2013/09/30/nycs-new-g...