Taxis and drivers are regulated by the city and, as of 2006, 477 licensed cabs operate in the city, including 59 wheelchair-accessible vehicles.
Drivers of the city's 12,053 licensed cabs generally seem to loathe the recordings.
She said in December the commission would consider making certain safety features mandatory on all licensed cabs.
There are about seven thousand licensed cabs operating within the city limits.
Illegal taxis are often more widely available on the streets and are generally thought to offer cheaper fares than licensed cabs.
The so-called congestion charge, equivalent to roughly $7.75 a day, will be levied on most vehicles; some, like ambulances, fire trucks, police cars and licensed cabs, are exempt.
Although, to be honest, we have to admit that the performance of the licensed cab has not reached light speed yet.
In London illegal cabs are called gray cabs, as the licensed legal cabs are called black cabs.
He dodges the police, who demand a $250 tax each month from licensed cabs.
Peter started to hail a licensed cab, but Elizabeth steered him toward a gypsy instead.