TransitMatters collects this data using the MBTA's V3 API. Unlike data from other sources, this data is not cleaned or filtered. Please expect reduced accuracy.

Official MBTA data will be shown when available. Technical details of our data collection can be found in our GitHub repository.

Due to data collection issues, bus data is not guaranteed to be complete for any stop or date.

This may lead to inaccuracy, particularly in headway calculations.