 CONT: When Travis gets back into his cab after buying the Kris  Kristofferson album, the beacon on the top reads "3S96", which is  consistent with real New York taxis, which have their medallion  number on their roof beacon. (Medallion numbers are always 4 digits,  with the second being a letter.) In the next shot, the roof beacon  reads "TAXI", which is never on a New York City taxis roof beacon,  but is often used in movies and TV shows.