[kylebgorman]

So, for context, yellow taxis run "anywhere" but in practice, they are somewhat rare anywhere but lower Manhattan and at the airports.

Green taxis, a new category, are only permitted to pick up hails outside of lower Manhattan. They're useful for going between outer boroughs but are reluctant or unwilling to take you to lower Manhattan because they can't pick up a hail there.

There is also another, long-standing category known as "car service", where a central dispatcher reached by phone sends you a towncar/minivan/SUV either at a scheduled time (say, for an early flight or your regular work commute), or as soon as possible. Like Uber, they may have an "account" for you so you don't need to provide payment information to the driver, but nowadays many of them have Stripe too. Prices are arguably better for airport rides than cabs.

I live in Central Brooklyn and my impression is that there are far more Uber "U"s than any of the other categories, at least in my neighborhood.

[kylebgorman]

Oh and of course, "gyspy"/"jitney" cabs/vans, which are quasi-legal $2 bus lines running bus routes in underserved communities.