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CTA Rail Ops - Chicago Transit Authority

Monitoring all CTA rail operations. Red, Blue, Pink, Green, Orange, Purple, and Yellow Lines, as well as Rail Emergency/Power Control.

Live Audio

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Scanner Master

Feed Details

Feed ID30297
GenreRail
StatusOnline (10h 44m)
Listeners1
Listeners — Last 24 Hours Min 0 Max 5 Now 1
3 listeners2 listeners1 listeners3 listeners0 listeners2 listeners2 listeners1 listeners3 listeners2 listeners5 listeners4 listeners1 listeners0 listeners0 listeners0 listeners0 listeners0 listeners0 listeners1 listeners1 listeners1 listeners0 listeners1 listeners

Feed Archives

Archives Page
Start End Plays
Aug 6, 1:50 PM 2:20 PM 0
Aug 6, 1:21 PM 1:51 PM 0
Aug 6, 12:51 PM 1:21 PM 0
Aug 6, 12:21 PM 12:51 PM 0
Aug 6, 11:51 AM 12:21 PM 0
Aug 6, 11:21 AM 11:51 AM 0
Aug 6, 10:51 AM 11:21 AM 0
Aug 6, 10:22 AM 10:52 AM 0
Aug 6, 9:52 AM 10:22 AM 0
Aug 6, 9:22 AM 9:50 AM 0
Times in CDT

Feed Notes

Monitoring CTA rail operations:

  • Rail Emergency/Power Control (Ch. 2, 470.9875MHz)
  • Blue and Pink Line Ops (Ch. 5, 471.0375MHz)
  • Green and Orange Line Ops (Ch. 6, 471.0625MHz)
  • Brown, Purple and Yellow Line Ops (Ch. 7, 471.0875MHz)
  • Red Line Ops (Ch. 8, 471.1125MHz)

You can listen to this feed to hear more information about the cause of CTA train delays.

CTA 10 Codes:

10-1 Receiving poorly
10-2 Receiving well
10-3 Stop transmitting
10-4 Message received and understood
10-7 Unit out of service
10-8 Unit in service
10-10 Police needs assistance
10-20 What is your location?
10-21 Call by telephone
10-25 Dirty vehicle
10-31 ATC bypass operation authorized
10-32 Stem bypass operation authorized
10-33 PCR bypass operation authorized
10-40 Radio check
10-41 Unauthorized switch
10-42 Abandoned bus
10-49 Check farebox
10-50 Make special service check
10-51 Go to location and assist as appropriate
10-52 Manpower shortage, runs held in (buses)
10-53 Use appropriate service restoration technique
10-55 Inspect all viaducts in district, check sewer covers
10-56 Bus equipment shortage, runs held in
10-57 Rail car shortage
10-58 Trip annulled (rail)

10-59 Salt over/underpasses, bridge approaches, etc.
10-60 Check employee
10-61 Employee injured
10-62 Employee sick
10-63 Other person sick or injured
10-65 Switch to alternate channel
10-68 Repeat message
10-71 Collision of CTA vehicle with fixed object
10-72 Collision of CTA vehicle with a person
10-73 Collision of CTA vehicle and other vehicle
10-74 Collision of CTA vehicles
10-75 Derailment
10-77 Have crew make announcement
10-80 Fire
10-82 Police assistance required
10-83 Throwing at bus or train
10-84 Assist with fare dispute
10-86 Disturbance in progress
10-87 If train is standing in station, remain standing
10-87 Train between stations stop outside next station
10-88 Alarm: bus, train or station
10-90 Bomb threat
10-91 Weapon threat
10-99 Dire emergency, stop all other radio transmissions

Source: "Scanner Master Chicagoland Pocket Guide", edited by Richard A. I. Carlson and Ted Moran.

Audio from a Uniden scanner with an external antenna, located just outside of downtown Chicago.