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 rail car from completing its trip, or starting its next scheduled trip.

Performance (September 2017):

In September, met the Target; the actual being 27,690 rail car miles - a decrease compared to that in August and an increase compared to that in September of 2016. Door and Friction Brake systems continue to be the most problematic.

Actions:

  1. Target Door and Friction Brake systems for improvement
  2. Reduce repeat failures
  3. Improve incident management in service to reduce the number of offloads