Monday, August 17, 2026

peak-151rough-daylong-gap

Day health

70.6

100 = every line running clean

Arrivals recorded

43,845

319 distinct trains

Peak trains at once

151

6:15 PM

Worst gap

238 min

Mattapan · Capen Street · 6:48 PM

The Score

open SVG

String-line diagram of every MBTA subway train on Monday, August 17, 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

6,699 arrivals · 25 trains

Orangehealthy

median 5m · p90 9m

7,777 arrivals · 22 trains

Bluestrained

median 5m · p90 11m

4,262 arrivals · 18 trains

Green-Bhealthy

median 10m · p90 19m

5,746 arrivals · 34 trains

Green-Chealthy

median 9m · p90 18m

4,407 arrivals · 32 trains

Green-Dhealthy

median 9m · p90 17m

6,468 arrivals · 79 trains

Green-Estrained

median 7m · p90 16m

6,977 arrivals · 54 trains

Mattapanrough

median 8m · p90 27m

1,509 arrivals · 6 trains

First light

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

4:41:41 AMAshmont
4:57:17 AMOak Grove
4:53:49 AMOrient Heights
4:36:58 AMBoston College
5:01:06 AMDean Road
4:47:43 AMWoodland
4:50:21 AMGilman Square
5:03:33 AMCentral Avenue

Last call

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

2:21:19 AMBraintree
1:02:11 AMMalden Center
1:12:51 AMWonderland
1:50:23 AMBoston College
2:00:22 AMCleveland Circle
2:01:30 AMRiverside
1:26:16 AMEast Somerville
1:42:26 AMMattapan

The wait you remember

238 minutes of nothing on the Mattapan at Capen Street, starting 6:48 PM.

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