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 (April 2018):

In April, met the Target; the actual being 30,389 rail car miles.  Door and friction brake systems continue to be the least reliable.


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