New York City's cabbies

New York City's cabbies object to a new system that includes GPS, fearing it'll be used to track them. But such services will soon be a routine part of life.


Wikipedia article "Taxicabs of the United States".
Throughout the United States there is a mature system of taxicabs. Most US cities have a licensing scheme which restricts the number of taxicabs allowed. These are sometimes called medallions or CPNC (Certificate of Public Necessity and Convenience).

cabbie, cabby
noun [C] INFORMAL
a driver of a taxi (= car that you pay to travel in)

(from Cambridge Advanced Learner's Dictionary)