About
MARTA

Key Performance Indicators

Mobility Mean Distance Between Failures

Definition: An industry standard that measures the mechanical reliability of the fleet. It measures the average Mobility miles between National Transit Database (NTD) reportable mechanical failures i.e., incidents precluding a Mobility vehicle from completing its trip, or starting its next scheduled trip. Currently, all mechanical breakdowns are counted as failures, thus exceeding the number of failures reported to NTD. 

Performance (May 2017):

In May, met the Target; the actual being 17,934 miles.