| routes | Routes and respective information for the MBTA system |
| Talertbyid | Queries active and upcoming times for a particular alert. |
| Talerts | Query all active and upcoming alerts. |
| Tdailymetrics | Query daily performance statistics. |
| Theadways | To get headways and train arrive times for a given station/route/direction in a certain time window.. Returns a list of headways at an origin station during a particular time period on a particular route. |
| Theadwaysperformance | Function to return performance data based on headways surrounding a given passenger's arrival time at a station on a given route. |
| Tmetrics | Query real-time performance statistics. |
| Tpredictionsbyroute | Query predictions by route |
| Tpredictionsbystop | Query predictions by stop |
| Tpredictionsbytrip | Query predictions by trip |
| Troutes | Query all T routes |
| Troutesbystop | Query all routes at a stop |
| Tschedulebyroute | Query the schedule by route |
| Tschedulebystop | Query schedule by stop |
| Tschedulebytrip | Query schedule by trip |
| Tservertime | Queries the current MBTA API server time. |
| Tstopsbylocation | Query stops by goegraphic location |
| Tstopsbyroute | Query stops by route |
| Tstopslookup | Search for information on a stop with a given name. Useful when stop_id is not known. |
| Ttravelperformance | Query performance statistics for many trips contained in a dataframe. |
| Ttraveltimes | Query travel times and travel time performance |
| Tvehiclesbyroute | Query vehicles by a route |
| Tvehiclesbytrip | Query vehicles by a particular trip. |