The average cabby works nine and a half hours a day. A cab's busiest hours are 6 to 8 p.m. And even as the economy has fallen deeper into recession, the number of cab rides each day in New York has remained relatively steady.  Those are among the most vivid bits of information about the yellow cab industry to emerge from a trove of new data collected by the Taxi and Limousine Commission from cabs equipped with new computerized systems that record each trip and fare.
The busiest hour for a cab is 9 p.m.