Saturday, August 22, 2026

peak-99long-gap

Day health

71.9

100 = every line running clean

Arrivals recorded

33,258

251 distinct trains

Peak trains at once

5:45 PM

Worst gap

240 min

Green-B · Park Street · 1:44 PM

The Score

open SVG

String-line diagram of every MBTA subway train on Saturday, August 22, 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 9m · p90 16m

5,478 arrivals · 22 trains

Orangehealthy

median 7m · p90 12m

2,470 arrivals · 5 trains

Bluehealthy

median 8m · p90 14m

3,249 arrivals · 8 trains

Green-Bstrained

median 9m · p90 19m

6,492 arrivals · 43 trains

Green-Cstrained

median 10m · p90 22m

4,099 arrivals · 30 trains

Green-Dstrained

median 10m · p90 20m

5,873 arrivals · 69 trains

Green-Estrained

median 11m · p90 28m

4,492 arrivals · 38 trains

Mattapanstrained

median 12m · p90 38m

1,105 arrivals · 3 trains

First light

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

4:37:17 AMAshmont
5:18:24 AMStony Brook
4:32:38 AMOrient Heights
4:00:02 AMBoston College
5:01:47 AMCleveland Circle
5:02:37 AMRiverside
5:04:26 AMLechmere
5:04:10 AMCentral Avenue

Last call

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

2:20:16 AMAlewife
2:38:31 AMForest Hills
2:16:24 AMWonderland
2:59:57 AMBoston College
2:59:56 AMCleveland Circle
2:55:48 AMRiverside
2:57:56 AMGilman Square
2:40:01 AMMattapan

The wait you remember

240 minutes of nothing on the Green-B at Park Street, starting 1:44 PM.

Rendered 3:40:09 AM ET · 1-minute resolution · mbta.cold.fyi