Timetable Test

Long wait · Chicago · Sat Oct 10

33 min with no Red Line train

At Morse, toward 95th/Dan Ryan, between 12:42 am and 1:15 am. The schedule called for a train every 15 min.

Line
Red Line
Station
Morse (station 40100)
Direction
toward 95th/Dan Ryan
Train before
run 923, passed 12:42:39 am
Train after
run 925, passed 1:15:39 am
Gap
33 min (1980 s)
Scheduled gap
15 min
Collector
running the whole time

Scheduled against seen

Each tick is a train at Morse toward 95th/Dan Ryan. The two runs either side of the gap are labeled.

ScheduledSeen92392512:15 am12:30 am12:45 am1:00 am1:15 am1:30 am1:45 am33 min gap

What Train Tracker said

Train Tracker reports each train's next stop. A train has passed Morse when its next stop moves past it.

SnapshotRun 923 (before)Run 925 (after)
12:41:09 amnext stop Morsenext stop Clark/Division
12:43:09 amnext stop Loyolanext stop North/Clybourn
12:45:09 amnext stop Granvillenext stop Fullerton
12:47:09 amnext stop Thorndalenext stop Belmont (Red/Brown/Purple)
12:49:09 amnext stop Berwynnext stop Belmont (Red/Brown/Purple)
12:51:09 amnext stop Lawrencenext stop Addison (Red)
12:53:09 amnext stop Wilsonnext stop Sheridan
12:55:09 amnext stop Sheridannext stop Wilson
12:57:09 amnext stop Addison (Red)next stop Wilson
12:59:09 amnext stop Belmont (Red/Brown/Purple)next stop Argyle
1:01:09 amnext stop Fullertonnext stop Bryn Mawr
1:03:09 amnext stop North/Clybournnext stop Granville
1:05:09 amnext stop North/Clybournnext stop Loyola
1:07:09 amnext stop Clark/Divisionnext stop Morse
1:09:09 amnext stop Chicago (Red)next stop Howard
1:11:09 amnext stop Lake (Subway)not in the feed

Showing 16 of 37 snapshots in the gap. The full record, every train on the line minute by minute, is in 2026-10-10-red-gap-90939.json.

Check it yourself

Scheduled times come from CTA's GTFS schedule for Sat Oct 10. Positions come from Train Tracker, polled once a minute. The raw records above are exactly what CTA's servers returned. How the numbers are worked out.