The official taxis have a medallion with the licence number on the bonnet and are in two colours, yellow and green. The latter are the Boro Taxis operating in the north of Manhattan (north of West 110th Street and East 96th Street), the Bronx, Queens (excluding airports), Brooklyn and Staten Island. They can take passengers anywhere but cannot load them outside their area.
Free passengers have the taxi sign above the roof of the car illuminated and you can stop them by raising your arm. To the rate marked on the taximeter must be added the tip, usually 15-20 % and any tolls for bridges or tunnels. A surcharge of $1 at 4:00pm-8:00pm Monday-Friday and $0.50 at 8:00pm-6:00am.
Up to four people can climb in the taxi, five in the minivan passenger cars and multiple destinations are allowed. Sometimes taxi drivers are immigrants who do not speak English well, so it is good to clarify the destination address for example by specifying the reference intersection. You can pay by credit card without additional fees and without a minimum amount on almost all taxis.
For any disputes, ask for the receipt and license number, and then report any abuse to the Taxi and Limousine Commission (tel. 311).
NYC Taxi and Limousine Commission (TLC)