Friday, September 4, 2026

peak-157rough-daylong-gap

Day health

59.4

100 = every line running clean

Arrivals recorded

47,679

388 distinct trains

Peak trains at once

157

5:00 PM

Worst gap

236 min

Green-D · Riverside · 4:54 PM

The Score

open SVG

String-line diagram of every MBTA subway train on Friday, September 4, 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 13m

7,234 arrivals · 28 trains

Orangehealthy

median 5m · p90 10m

7,845 arrivals · 22 trains

Bluestrained

median 5m · p90 12m

4,401 arrivals · 18 trains

Green-Bstrained

median 7m · p90 15m

7,959 arrivals · 31 trains

Green-Chealthy

median 9m · p90 18m

4,606 arrivals · 54 trains

Green-Dstrained

median 8m · p90 18m

7,164 arrivals · 88 trains

Green-Estrained

median 8m · p90 17m

7,016 arrivals · 77 trains

Mattapanrough

median 8m · p90 29m

1,454 arrivals · 5 trains

First light

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

4:48:51 AMAshmont
5:02:07 AMOak Grove
4:32:02 AMOrient Heights
4:00:02 AMBoston College
5:01:00 AMCleveland Circle
4:46:25 AMRiverside
4:47:14 AMEast Somerville
5:01:41 AMCapen Street

Last call

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

2:08:10 AMShawmut
1:55:57 AMMalden Center
2:11:24 AMWonderland
2:59:22 AMBoston College
2:31:25 AMCleveland Circle
2:43:40 AMRiverside
2:15:28 AMBall Square
2:36:18 AMMattapan

The wait you remember

236 minutes of nothing on the Green-D at Riverside, starting 4:54 PM.

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