About
MARTA

Key Performance Indicators

Rail Mean Distance Between Failures

Definition: An industry standard that measures the mechanical reliability of the fleet. It measures the average rail car miles between National Transit Database (NTD) reportable mechanical failures i.e., incidents precluding a revenue vehicle from completing its trip, or starting its next scheduled trip.

Performance (May 2017):

In May, met the Target; the actual being 34,482 rail car miles. Incidents with Door and Friction Brake systems continue to be the most frequent, though slightly improving compared to the previous month.

Actions:

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