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Metro-North
Railroad
Mean Distance Between Failures
| Sep 2008: 107,579 miles | Oct 2007 — Sep 2008: 111,849 miles |
| Sep 2009: 170,649 miles | Oct 2008 — Sep 2009: 105,399 miles |
Mean Distance Between Failures (MDBF) is the average number of miles a railcar travels in revenue service before breaking down and causing a delay. The higher the mileage for the MDBF, the more reliable the equipment and the service.
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