Long wait · Chicago · Sat Oct 10
37 min with no Blue Line train
At UIC-Halsted, toward O'Hare, between 10:41 pm and 11:18 pm. The schedule called for a train every 9 min.
- Line
- Blue Line
- Station
- UIC-Halsted (station 40350)
- Direction
- toward O'Hare
- Train before
- run 220, passed 10:41:39 pm
- Train after
- run 221, passed 11:18:39 pm
- Gap
- 37 min (2220 s)
- Scheduled gap
- 9 min
- Collector
- running the whole time
Scheduled against seen
Each tick is a train at UIC-Halsted toward O'Hare. The two runs either side of the gap are labeled.
What Train Tracker said
Train Tracker reports each train's next stop. A train has passed UIC-Halsted when its next stop moves past it.
| Snapshot | Run 220 (before) | Run 221 (after) |
|---|---|---|
| 10:40:09 pm | next stop UIC-Halsted | next stop Kedzie-Homan |
| 10:42:09 pm | next stop Clinton (Blue) | next stop Western (Blue - Forest Park Branch) |
| 10:44:09 pm | next stop Jackson (Blue) | next stop Western (Blue - Forest Park Branch) |
| 10:46:09 pm | next stop Washington | next stop Illinois Medical District |
| 10:48:09 pm | next stop Clark/Lake | next stop Racine |
| 10:50:09 pm | next stop Grand (Blue) | next stop Racine |
| 10:52:09 pm | next stop Chicago (Blue) | next stop UIC-Halsted |
| 10:54:09 pm | next stop Division | next stop UIC-Halsted |
| 10:56:09 pm | next stop Damen (Blue) | next stop UIC-Halsted · flagged delayed |
| 10:58:09 pm | next stop Western (Blue - O'Hare Branch) | next stop UIC-Halsted · flagged delayed |
| 11:00:09 pm | next stop Logan Square | next stop UIC-Halsted · flagged delayed |
| 11:02:09 pm | next stop Belmont (Blue) | not in the feed |
| 11:04:09 pm | next stop Addison (Blue) | not in the feed |
| 11:06:09 pm | next stop Irving Park (Blue) | not in the feed |
| 11:08:09 pm | next stop Montrose (Blue) | not in the feed |
| 11:10:09 pm | next stop Montrose (Blue) | not in the feed |
Showing 16 of 41 snapshots in the gap. The full record, every train on the line minute by minute, is in 2026-10-10-blue-gap-83919.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.