About
MARTA

Key Performance Indicators

Mobility Mean Distance Between Failures

Definition: Measures the mean distance (actual vehicle miles) between mechanical failures reportable to National Transit Database, i.e., those precluding a vehicle from completing its trip or starting its next scheduled trip. 

Performance (December 2019):  

Mobility Mean Distance Between Failures in December was 129,910 miles, which met the target of 15,000 miles. Note: Higher Mobility Mean Distance Between Failures is better.