About
MARTA

Key Performance Indicators

Bus Mean Distance Between Failures

Definition: An industry standard that measures the mechanical reliability of the fleet. It measures the average bus 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. Currently, all mechanical breakdowns are counted as failures, thus exceeding the number of failures reported to NTD. 

Performance (May 2017):

In May, did not meet the Target; the actual being 3,068 miles. The overall number of breakdowns increased from 867 in April to 871 in May. The number of Engine system failures decreased by 6%, that of HVAC system failures increased by 13%, that of Cooling system failures decreased by 11%, and that of Brake system failures increased by 3%.  

Actions:

Continue conducting troubleshooting refresher training at all garages.