Timetable Test

Long wait · Chicago · Sat Oct 10

40 min with no Orange Line train

At Ashland (Orange), toward Adams/Wabash, between 11:47 pm and 12:28 am. The schedule called for a train every 15 min.

Line
Orange Line
Station
Ashland (Orange) (station 41060)
Direction
toward Adams/Wabash
Train before
run 719, passed 11:47:39 pm
Train after
run 717, passed 12:28:09 am
Gap
40 min (2430 s)
Scheduled gap
15 min
Collector
running the whole time

Scheduled against seen

Each tick is a train at Ashland (Orange) toward Adams/Wabash. The two runs either side of the gap are labeled.

ScheduledSeen71771971771911:15 pm11:30 pm11:45 pm12:00 am12:15 am12:30 am12:45 am1:00 am40 min gap

What Train Tracker said

Train Tracker reports each train's next stop. A train has passed Ashland (Orange) when its next stop moves past it.

SnapshotRun 719 (before)Run 717 (after)
11:46:09 pmnext stop Ashland (Orange)next stop Ashland (Orange)
11:49:09 pmnext stop Halsted (Orange)next stop Western (Orange)
11:52:09 pmnext stop Rooseveltnext stop Western (Orange)
11:55:09 pmnext stop Harold Washington Library-State/Van Burennext stop Kedzie (Orange)
11:58:09 pmnext stop LaSalle/Van Burennext stop Pulaski (Orange)
12:01:09 amnext stop Clark/Lakenext stop Midway
12:04:09 amnext stop Washington/Wabashnot in the feed
12:07:09 amnext stop Adams/Wabashnot in the feed
12:10:09 amnext stop Rooseveltnot in the feed
12:13:09 amnext stop Halsted (Orange)not in the feed
12:16:09 amnext stop Ashland (Orange)next stop Pulaski (Orange)
12:19:09 amnext stop Western (Orange)next stop Kedzie (Orange)
12:22:09 amnext stop Western (Orange)next stop 35th/Archer
12:25:09 amnext stop Kedzie (Orange)next stop 35th/Archer
12:28:09 amnext stop Pulaski (Orange)not in the feed

Showing 15 of 45 snapshots in the gap. The full record, every train on the line minute by minute, is in 2026-10-10-orange-gap-88089.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.