Sunday, August 16, 2026

peak-77rough-daylong-gap

Day health

44.4

100 = every line running clean

Arrivals recorded

25,511

159 distinct trains

Peak trains at once

4:25 PM

Worst gap

212 min

Mattapan · Ashmont · 8:18 PM

The Score

open SVG

String-line diagram of every MBTA subway train on Sunday, August 16, 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

5,288 arrivals · 19 trains

Orangehealthy

median 8m · p90 12m

5,354 arrivals · 10 trains

Bluehealthy

median 8m · p90 13m

3,091 arrivals · 9 trains

Green-Brough

median 2m · p90 16m

3,897 arrivals · 22 trains

Green-Crough

median 1m · p90 51m

48 arrivals · 7 trains

Green-Dstrained

median 10m · p90 22m

3,936 arrivals · 39 trains

Green-Erough

median 1m · p90 21m

2,887 arrivals · 34 trains

Mattapanrough

median 12m · p90 39m

1,010 arrivals · 5 trains

First light

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

4:58:06 AMBraintree
5:14:42 AMOak Grove
5:51:14 AMWonderland
4:00:01 AMBoston College
4:13:50 AMCleveland Circle
5:26:33 AMRiverside
5:27:55 AMEast Somerville
5:47:31 AMValley Road

Last call

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

1:17:22 AMShawmut
1:32:30 AMStony Brook
1:14:15 AMWonderland
2:01:31 AMBoston College
2:12:30 AMCleveland Circle
1:59:37 AMWoodland
1:35:08 AMMedford/Tufts
1:37:13 AMMattapan

The wait you remember

212 minutes of nothing on the Mattapan at Ashmont, starting 8:18 PM.

Rendered 3:40:03 AM ET · 1-minute resolution · mbta.cold.fyi