San Francisco's MUNI system has a stated on-time performance of 59.3% , which counts vehicles that run within 4 minutes of schedule. However, OTP is only one factor in perceived transit quality.
This visualization expresses many transit performance metrics, including:
Delays: Vehicles become behind schedule due to street traffic or other factors.
Bunching: Late vehicles get later as they need to pick up more passengers.
Infrequent Service: Large headways due to less vehicles in service than scheduled.