New York City Taxi and Limousine Commission

The New York City Taxi and Limousine Commission (NYC TLC) is an agency of the New York City government that licenses and regulates the medallion taxis and for-hire vehicle industries, including app-based companies such as Uber and Lyft. The TLC's regulatory landscape includes medallion (yellow) taxicabs, green or Boro taxicabs, black cars (including both traditional and app-based services), pre-arranged car services (which require advance reservation and provide fixed-rate pricing), community-based livery cars, commuter vans, paratransit vehicles (ambulettes), and some luxury limousines.

Source: Wikipedia — New York City Taxi and Limousine Commission (CC BY-SA 4.0)