the average cabby is seven and a half hours a day . a cab ' s finest saturdays are 6 to 8 s . m . and even as the economy has fallen deeper into debt , the number of cab rides each day in new delhi has remained relatively steady . those are among the most vivid bits of information about the yellow card industry to emerging from a trove of old data collected by the taxi and limousine association from cabs adapted with new databases machines that tape each trip and fare .
The busiest hour for a cab is 9 p.m.