Timetable Test

Bunched trains · New York · Sat Oct 10

Two 1 trains 1 min apart

At 238 St, toward South Ferry, between 11:07 pm and 11:08 pm. The schedule called for a train every 8 min.

Line
1 train
Station
238 St (station 103)
Direction
toward South Ferry
Train before
train 01 2303+ 242/SFT, passed 11:07:39 pm
Train after
train 01 2307+ 242/SFT, passed 11:08:39 pm
Gap
1 min (60 s)
Scheduled gap
8 min
Collector
running the whole time

Scheduled against seen

Each tick is a train at 238 St toward South Ferry. The two trains either side of the bunch are labeled.

ScheduledSeen01 2303+ 201 2307+ 210:30 pm10:45 pm11:00 pm11:15 pm11:30 pm11:45 pm1 min gap

What the MTA feed said

The MTA feed reports each train's next stop. A train has passed 238 St when its next stop moves past it.

SnapshotTrain 01 2303+ 242/SFT (before)Train 01 2307+ 242/SFT (after)
11:06:09 pmnext stop 238 Stnot in service yet
11:07:09 pmnext stop 238 Stnot in service yet
11:08:09 pmnext stop 231 Stnot in service yet
11:09:09 pmtrip finishednot in service yet
11:10:09 pmtrip finishednext stop Marble Hill-225 St

Showing 5 of 5 snapshots in the gap. The full record, every train on the line minute by minute, is in 2026-10-10-1-bunch-83319.json.

Check it yourself

Scheduled times come from the MTA's supplemented GTFS schedule for Sat Oct 10. Positions come from the MTA feed, polled once a minute. The raw records above are exactly what MTA's servers returned. How the numbers are worked out.