For service and repair drivers who work south of 60th St. in Manhattan, wicked traffic congestion means they lose one trip per day. May not sound like much, but according to this study I mentioned a while back, it costs each one $7,000 in annual income. A cabbie loses 5.3 trips a day and $8,000 in annual income. Many people assume that less driving means less congestion, but those familiar with Manhattan know better. In fact rush “hour” in Manhattan now spans 12-14 hours.