Saturday, August 29, 2026

peak-103long-gap

Day health

77.5

100 = every line running clean

Arrivals recorded

33,588

350 distinct trains

Peak trains at once

103

4:50 PM

Worst gap

216 min

Mattapan · Butler · 10:23 PM

The Score

open SVG

String-line diagram of every MBTA subway train on Saturday, August 29, 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

Redstrained

median 8m · p90 17m

5,584 arrivals · 23 trains

Orangehealthy

median 7m · p90 13m

2,351 arrivals · 5 trains

Bluehealthy

median 8m · p90 13m

3,391 arrivals · 8 trains

Green-Bstrained

median 9m · p90 19m

6,268 arrivals · 63 trains

Green-Chealthy

median 11m · p90 21m

3,936 arrivals · 89 trains

Green-Dstrained

median 11m · p90 22m

5,388 arrivals · 95 trains

Green-Ehealthy

median 11m · p90 20m

5,608 arrivals · 25 trains

Mattapanstrained

median 12m · p90 39m

1,062 arrivals · 2 trains

First light

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

5:13:39 AMAshmont
5:16:49 AMGreen Street
5:06:33 AMOrient Heights
5:02:42 AMSouth Street
5:04:29 AMTappan Street
5:02:00 AMRiverside
4:58:51 AMMedford/Tufts
5:02:13 AMValley Road

Last call

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

2:21:49 AMAlewife
2:29:28 AMForest Hills
2:17:26 AMWonderland
2:59:59 AMBoston College
2:27:24 AMCleveland Circle
2:48:53 AMRiverside
2:57:01 AMLechmere
2:43:11 AMMattapan

The wait you remember

216 minutes of nothing on the Mattapan at Butler, starting 10:23 PM.

Rendered 3:40:07 AM ET · 1-minute resolution · mbta.cold.fyi