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 (September 2017):

In September, met the Target; the actual being 27,690 rail car miles - a decrease compared to that in August and an increase compared to that in September of 2016. Door and Friction Brake systems continue to be the most problematic.


  1. Target Door and Friction Brake systems for improvement
  2. Reduce repeat failures
  3. Improve incident management in service to reduce the number of offloads