IBO based its estimates on data available from the Metropolitan Transportation Authority. Much of the impact of subway delays falls on commuters themselves, shrinking the time they have for other responsibilities, such as taking children to school or caring for other family members.While this can translate into a steep cost for individual riders, it is a very small cost relative to the size of the cityвЂ™s economy. The dollar value of the hours lost to delays on a typical workday morning is about $1.2 million a day, or $307 million annually.Lost hours have increased the least on the 3 (up 25 percent), G (26 percent), and 4 (31 percent). Hours of delay have increased most on the J/Z (up 71 percent), C (69 percent), and the 7 (62 percent). Passenger hours lost to delays on a typical weekday during the morning rush have increased on every line by at least 24 percent from the average for 2012 as a whole through the 12-month period ending in May 2017.The lines with the largest share of service gaps were the 5 (66 percent of train runs meet standards), 6 (67 percent), and A (70 percent). Next best were the D (80 percent) and Q (79 percent). Riders on the G were the least likely to encounter service gaps based on monthly averages in January 2015 through May 2017, with 83 percent of train runs meeting service standards. About one-fourth of weekday train runs have gaps in service-meaning passengers wait longer for subways to arrive than acceptable under the time frames set by the Metropolitan Transportation Authority.The average number of passenger-hours lost during the morning rush grew by 45 percent to almost 35,000 hours from 2012 to the 12-month period ending in May 2017. The average number of delays in a month has increased dramatically, from about 20,000 a month in 2012 to more than 67,450 in May 2017. IBOвЂ™s review of subway performance data-by line and systemwide-over a period of more than five years shows that service disruptions are taking an increasing toll. That the magnitude of subway delays is getting worse is not just a matter of perception. How Much Time and Money Are New York City Subway Riders Losing to Delays?ДЄfter two days of major breakdowns upended subway service on a number of lines and left many commuters irate, Brooklyn Borough President Eric Adams asked IBO to estimate the time being lost to riders because of these disruptions and to put the lost hours into monetary terms for riders and the local economy.

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