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 actual vehicle miles between National Transit Database (NTD) reportable mechanical failures i.e., incidents precluding a bus from completing its trip, or starting its next scheduled trip. 

Performance (September 2017):

In September, met the Target; the actual being 6,723 miles. The overall number of breakdowns decreased from 1,034 in August to 837 in September. The number of engine failures decreased by 28%, that of HVAC failures decreased by 4%, that of cooling system failures decreased by 22%, and that of brake system failures decreased by 32%.