SL4

Nubian Station – South Station

Bus rapid transit · Route SL4

South Station ↔ Nubian

Good service Every 14–20 min 6:02 AM – 12:56 AM 2 buses live
Track live
Direction
Live · as of 10:25 PM

Stops, live buses and next arrivals

Live data is delayed.
    1. Essex St @ Atlantic Ave10 bus routes14 minthen 34 min
    2. Chinatown Gate3 bus routes16 minthen 36 min
    3. Washington St @ Tufts Med Ctr3 bus routesDuethen 18 min
    4. Washington St @ Herald St4 bus routes3 minthen 19 min 1291 · 2 min late
    5. Washington St @ E Berkeley St4 bus routes4 minthen 20 min
    6. Washington St @ W Dedham St4 bus routes7 minthen 22 min
    7. Washington St @ W Newton St4 bus routes8 minthen 23 min
    8. Washington St @ Worcester St3 bus routes9 minthen 24 min
    9. Washington St @ Massachusetts Ave4 bus routes9 minthen 24 min
    10. Washington St @ Lenox St3 bus routes10 minthen 25 min
    11. Washington St @ Melnea Cass Blvd9 bus routes12 minthen 27 min
    12. Nubian15 bus routesNo more buses
    1. Nubian15 bus routes14 minthen 34 min
    2. Washington St @ Melnea Cass Blvd - Silver Line6 bus routes15 minthen 35 min
    3. Washington St @ Lenox St3 bus routes16 minthen 35 min
    4. Washington St @ Massachusetts Ave4 bus routes16 minthen 35 min
    5. Washington St @ Worcester St3 bus routes16 minthen 35 min
    6. Washington St @ E Newton St4 bus routes17 minthen 36 min
    7. Washington St @ Union Pk2 bus routes1 minthen 18 min 1287 · 3 min late
    8. Washington St @ E Berkeley St4 bus routes2 minthen 19 min
    9. Washington St @ Herald St3 bus routes3 minthen 20 min
    10. Washington St @ Tufts Med Ctr3 bus routes5 minthen 22 min
    11. Washington St @ Essex St3 bus routes7 minthen 24 min
    12. Essex St @ Atlantic Ave10 bus routesNo more buses
    Live arrival Grey times are scheduled Not tracked: scheduled, but no bus is reporting

    Timetable

    Scheduled departures for any day MBTA has published. For live arrivals, use the diagram above.

    Sunday schedule Sun, Nov 1

    6 AM
    20354758
    7 AM
    0921334556
    8 AM
    0819304253
    9 AM
    05203347
    10 AM
    0215294357
    11 AM
    133046
    12 PM
    02193653
    1 PM
    102744
    2 PM
    01183552
    3 PM
    09264259
    4 PM
    163148
    5 PM
    05203754
    6 PM
    09264358
    7 PM
    13263953
    8 PM
    07193959
    9 PM
    1939
    10 PM
    0020next 40
    11 PM
    002040
    After midnight · Mon, Nov 2
    12 AM
    002040

    On-time performance

    How much of the time buses ran early, on time or late, hour by hour.

    87% on time today

    from 534 vehicle-minutes

    • On time
    • Late (over 5 min)
    • Early (over 1 min)
    • Fewer than 30 vehicle-minutes
    On time: no more than 1 min early or 5 min late, sampled once a minute from live positions. Use the left and right arrow keys to read each hour.
    Hour-by-hour numbers
    HourOn timeLateEarlyVehicle-minutesPrevious 0 days, on time
    6 PM92%0%8%48–
    7 PM84%13%3%166–
    8 PM82%15%3%156–
    9 PM88%7%5%112–
    10 PM100%0%0%52–

    Connections

    Bus routes you can transfer to from the Nubian Station – South Station.

    And 22 more routes at stops along the way. 41Centre Street & Eliot Street – Jfk/UMass Station42Forest Hills Station – Nubian Station44Jackson Square Station – Ruggles Station45Franklin Park – Ruggles Station66Harvard Square – Nubian StationCommuter Rail ShuttleBraintree – South Station (Express)Fairmount Line ShuttleReadville – South StationFranklin Line ShuttleForge Park/495 – WalpoleKingston Line ShuttleSouth Weymouth – South StationRed Line ShuttleQuincy Center – Broadway (Express)SL1Logan Airport Terminals – South StationSL2Design Center – South StationSL3Chelsea Station – South StationSLWSilver Line Way – South StationWorcester Line ShuttleBoston Landing – South Station (Express)9City Point – Copley Square11City Point – Chauncy Street & Summer Street10City Point – Arlington StationCT3Beth Israel Deaconess Hospital – Andrew Station501Brighton Center – Federal Street & Franklin Street504Watertown Yard – Federal Street & Franklin Street505Waltham Center – Federal Street & Franklin Street

    About the Nubian Station – South Station

    The Nubian Station – South Station (SL4, MBTA route SL4) is a bus rapid transit line with 12 stops between Essex St @ Atlantic Ave and Nubian.

    Times with the live mark come from each bus's GPS and MBTA's real-time predictions. Times marked "Not tracked" are scheduled trips with no bus reporting. All other times are from MBTA's published schedule (feed Fall 2026, 2026-10-30T17:51:33+00:00, version D).

    How often does the Nubian Station – South Station run?

    Every 14–20 min for most of the day on weekdays, based on the published schedule.

    When does the Nubian Station – South Station start and stop?

    The first bus leaves around 6:02 AM and the last arrives around 12:56 AM.

    What are timepoints?

    Timepoints are stops where the bus is scheduled to wait if it's running early; times at the stops between them are estimates. On long routes, the diagram shows timepoints, transfer stops and stops with a bus nearby, and groups the stops in between.