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 (August 2017):

In August, met the Target; the actual being 33,630 rail car miles - an increase over that in July and that in August 2016. Incidents affecting Door and Friction Brake systems continue to be the most frequent. 


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