Key Performance Indicators

Rail Mean Distance Between Failures

Definition: Measures the mean distance (rail car miles) between mechanical failures reportable to National Transit Database, i.e., those precluding a rail car from completing its trip or starting its next scheduled trip.

Performance (December 2018):

In December, did not meet the Target; the actual being 20,756 rail car miles. ATC, doors and friction brakes continue to malfunction the most.


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