Saturday, September 5, 2026

peak-109long-gap

Day health

71.9

100 = every line running clean

Arrivals recorded

37,218

232 distinct trains

Peak trains at once

109

2:25 PM

Worst gap

218 min

Green-B · Boston College · 10:08 PM

The Score

open SVG

String-line diagram of every MBTA subway train on Saturday, September 5, 2026

Time runs left to right across the service day (4 AM → 3 AM). Each panel is one line, top to bottom along the route. Every diagonal is a single train: steep is fast, flat is stopped, a cluster is bunching, and blank space is the wait you remember.

Trains in service

Line by line

Redhealthy

median 8m · p90 16m

5,640 arrivals · 27 trains

Orangehealthy

median 7m · p90 13m

5,981 arrivals · 12 trains

Bluehealthy

median 8m · p90 15m

3,324 arrivals · 7 trains

Green-Bstrained

median 9m · p90 20m

5,669 arrivals · 33 trains

Green-Cstrained

median 10m · p90 21m

4,282 arrivals · 40 trains

Green-Dstrained

median 10m · p90 20m

5,923 arrivals · 54 trains

Green-Estrained

median 10m · p90 21m

5,331 arrivals · 36 trains

Mattapanstrained

median 12m · p90 40m

1,068 arrivals · 3 trains

First light

The first recorded arrival on each line — the day starting without you.

4:55:01 AMAshmont
5:00:41 AMOak Grove
4:43:53 AMOrient Heights
4:00:02 AMBoston College
4:06:59 AMCleveland Circle
4:59:15 AMRiverside
4:59:24 AMMedford/Tufts
5:01:34 AMCapen Street

Last call

The last recorded arrival on each line. After this, the tunnels go quiet.

2:08:10 AMDavis
2:00:49 AMMalden Center
2:13:04 AMWonderland
2:59:34 AMBoston College
2:59:43 AMKenmore
2:46:20 AMRiverside
2:43:54 AMEast Somerville
2:37:13 AMMattapan

The wait you remember

218 minutes of nothing on the Green-B at Boston College, starting 10:08 PM.

Rendered 3:40:05 AM ET · 1-minute resolution · mbta.cold.fyi