Timetable Test

Long wait · Chicago · Sat Oct 10

38 min with no Blue Line train

At Clinton (Blue), toward Forest Park, between 10:43 pm and 11:21 pm. The schedule called for a train every 10 min.

Line
Blue Line
Station
Clinton (Blue) (station 40430)
Direction
toward Forest Park
Train before
run 215, passed 10:43:39 pm
Train after
run 137, passed 11:21:09 pm
Gap
38 min (2250 s)
Scheduled gap
10 min
Collector
running the whole time

Scheduled against seen

Each tick is a train at Clinton (Blue) toward Forest Park. The two runs either side of the gap are labeled.

ScheduledSeen21513710:15 pm10:30 pm10:45 pm11:00 pm11:15 pm11:30 pm11:45 pm12:00 am38 min gap

What Train Tracker said

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

SnapshotRun 215 (before)Run 137 (after)
10:42:09 pmnext stop LaSallenext stop Jefferson Park Transit Center
10:45:09 pmnext stop UIC-Halstednext stop Montrose (Blue)
10:48:09 pmnext stop Racinenext stop Irving Park (Blue)
10:51:09 pmnext stop Racinenext stop Belmont (Blue)
10:54:09 pmnext stop Racine · flagged delayednext stop Logan Square
10:57:09 pmnot in the feednext stop Western (Blue - O'Hare Branch)
11:00:09 pmnot in the feednext stop Division
11:03:09 pmnot in the feednext stop Chicago (Blue)
11:06:09 pmnot in the feednext stop Chicago (Blue)
11:09:09 pmnot in the feednext stop Grand (Blue)
11:12:09 pmnot in the feednext stop Clark/Lake
11:15:09 pmnot in the feednext stop Washington
11:18:09 pmnext stop Illinois Medical Districtnext stop Jackson (Blue)
11:21:09 pmnext stop Western (Blue - Forest Park Branch)not in the feed

Showing 14 of 42 snapshots in the gap. The full record, every train on the line minute by minute, is in 2026-10-10-blue-gap-84069.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.