OBSERVED MBTA TRAVEL TIME · 30 SERVICE DAYS

Summit AvenuetoTappan Street

Green Line

A direct MBTA train from Summit Avenue to Tappan Street took a median 3.8 minutes across 3,735 observed trips; 90% of measured rides finished within approximately 4.8 minutes.

Source: MBTA Performance Data · 2026-08-20 to 2026-09-18 · Completed direct trips only

Typical3.8 min50th percentile
Slower trip4.8 min90th percentile
Scheduled5.2 minmedian timetable
On pace100%within 2 min of schedule

THE SHORT ANSWER

How long does Summit Avenue to Tappan Street take?

The median completed ride from Summit Avenue to Tappan Street was 3.8 minutes; the published schedule’s median was 5.2 minutes.

Based on 3,735 direct trips between 2026-08-20 and 2026-09-18, the median observed ride was 3.8 minutes. That was within 1.5 minutes of the published schedule.

Nine out of ten measured trips finished within approximately 4.8 minutes. These figures describe completed direct trips; they do not include the time spent waiting for the train.

WHEN YOU TRAVEL

Summit Avenue to Tappan Street times by daypart

Morning rush produced the fastest median for Summit Avenue to Tappan Street; Midday produced the slowest.

Differences can change as the rolling dataset updates.

Morning rush

3.8 min 661 trips · 100% on pace

Midday

4.2 min 943 trips · 100% on pace

Evening rush

4.2 min 690 trips · 100% on pace

Off-peak

3.8 min 1,441 trips · 100% on pace

MEASUREMENT SAMPLE

How Summit Avenue to Tappan Street was measured

The Summit Avenue to Tappan Street estimate uses 3,735 completed direct-trip stop-timestamp pairs matched to the schedule active for each observed train.

We publish the median because one dramatic delay should not define an everyday journey, and the 90th percentile because riders still need to understand the bad end of normal.

We do not infer why a trip ran slowly. Construction, incidents, crowding and weather require separate evidence.

Read the complete method →