Key Performance Indicators

Rail Mean Distance Between Failures

Definition: An industry standard that measures the mechanical reliability of the fleet. It measures the average rail car miles between National Transit Database (NTD) reportable mechanical failures i.e., incidents precluding a rail car from completing its trip, or starting its next scheduled trip.

Performance (October 2017):

In October, met the Target; the actual being 23,196 rail car miles - a decrease of 4,494 miles compared to that in September. Failures related to door and friction brake systems continue to be the most frequent.


  1. Target poor performing systems for improvement
  2. Reduce repeat failures
  3. Improve incident management in service to reduce offloads