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About
MARTA

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.

Actions:

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