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About
MARTA

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 (August 2018):

In August, did not meet the Target; the actual being 20,615 rail car miles. In addition to the heat related uptick in air conditioner failures, ATC, doors and friction brakes continue to be the most frequently malfunctioning systems.

Actions:

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