Chapter 6, section 1 of TLC Rules defines a For-Hire Vehicle as:
A motor vehicle carrying passengers for-hire in the City, with a seating capacity of twenty passengers or less, excluding the driver, with three (3) or more doors, other than a taxicab, coach, wheelchair accessible van, commuter van or an authorized bus operating pursuant to applicable provisions of law, and not permitted to accept street hails from prospective passengers in the street and required to be licensed by the Commission.

We recently passed new rules that change the way livery
cabs (more commonly known as “car service cars”, “gypsy
cabs”, “black cars”, and “dollar cabs”) look and operate.
. . .
Livery cars are not allowed to pick you up on the street. They
have to be dispatched through their base.