Thursday, August 20, 2026

peak-144rough-daylong-gap

Day health

70.6

100 = every line running clean

Arrivals recorded

40,148

294 distinct trains

Peak trains at once

144

7:30 AM

Worst gap

234 min

Green-B · Park Street · 12:01 PM

The Score

open SVG

String-line diagram of every MBTA subway train on Thursday, August 20, 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 6m · p90 14m

6,697 arrivals · 27 trains

Orangehealthy

median 5m · p90 11m

2,946 arrivals · 8 trains

Bluestrained

median 5m · p90 11m

4,467 arrivals · 18 trains

Green-Bhealthy

median 9m · p90 17m

6,001 arrivals · 32 trains

Green-Chealthy

median 9m · p90 17m

4,362 arrivals · 25 trains

Green-Dhealthy

median 8m · p90 16m

7,041 arrivals · 90 trains

Green-Estrained

median 8m · p90 17m

7,136 arrivals · 42 trains

Mattapanrough

median 7m · p90 26m

1,498 arrivals · 5 trains

First light

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

4:49:27 AMAshmont
5:17:05 AMGreen Street
4:41:50 AMOrient Heights
4:07:04 AMBoston College
4:15:07 AMCleveland Circle
4:46:12 AMRiverside
4:47:42 AMGilman Square
5:01:28 AMCapen Street

Last call

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

1:19:45 AMDavis
1:47:36 AMStony Brook
1:16:51 AMWonderland
2:59:19 AMBoston College
1:28:40 AMCleveland Circle
2:12:05 AMRiverside
1:49:25 AMBall Square
1:38:52 AMMattapan

The wait you remember

234 minutes of nothing on the Green-B at Park Street, starting 12:01 PM.

Rendered 3:40:04 AM ET · 1-minute resolution · mbta.cold.fyi