Key Performance Indicators

Rail Mean Distance Between Failures

Definition: An industry reliability standard that measures the mean distance (rail car miles) between mechanical failures reportable to National Transit Database, i.e., those precluding a revenue vehicle from completing its trip or starting its next scheduled trip.

Performance (February 2018):

In February, met the Target; the actual being 27,168 rail car miles. Door and friction brake failures continue to be the most frequent.


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