New Year, New Tracker: CTA Train Tracker Arriving in January 2011

December 30, 2010

Chicago Transit Authority President Richard L. Rodriguez today announced that a pilot version of the highly anticipated CTA Train Tracker will be launched in early January via a dedicated website. Customers using desktop computers or mobile web-enabled devices, such as iPhones, BlackBerries or smartphones, will be able to access estimated arrival times for trains on all eight rail lines.

“Following the popularity of Bus Tracker, the CTA has been developing a similar tool for riders to get estimated arrival times for trains,” said Rodriguez. “We are just as eager as our customers for this pilot program to launch so that our rail customers have the information they need to better plan their trips and make their experience on the CTA even more convenient and reliable."

Train Tracker main page

Estimated arrival times will be generated through a combination of scheduling information and data collected by the CTA’s QuicTrak program, which monitors signaling systems and indicates when a portion of track is occupied by a train. An average transit time is determined by measuring how long it takes a train to travel a portion of track. By averaging the travel times of the last five trains to move across a portion of track, the CTA can calculate the estimated arrival times for trains at each station.

To view estimated arrival times, customers will simply have to go to the dedicated website, select their preferred rail line and then choose a station. Arrival times of approaching trains within a 15-minute timeframe will be provided for the selected station, and results will refresh approximately every 20-30 seconds. Customers will have the option to choose the number of results displayed and how they are sorted – either by track or route if the station is served by multiple rail lines; or by time to arrival.

In the event arrival times cannot be calculated – such as with the first trains in the morning – Train Tracker will provide and indicate schedule information for the next arriving train(s).

Since April, stations equipped with electronic signs have been testing estimated arrival time displays. Because the electronic displays across the rail system are not uniform in age, size, character availability or the number of lines displayed, personnel have been working diligently to develop a consistent method of delivering accurate data for the various display types.

Preview of results pageAs part of the Train Tracker pilot, electronic signs at 10 CTA stations also will feature arrival information either on the platform or mezzanine levels.

Specific details regarding CTA Train Tracker and station locations that will display train arrival information will be made available in January when the program is officially launched.

It should be noted that this will be the preliminary release of a beta Train Tracker website and it will not have the accuracy of programs such as CTA Bus Tracker, which uses global positioning system (GPS) technology. In the months ahead, the CTA will be making adjustments to improve information accuracy.

During the pilot period, customers are encouraged to contact the CTA and provide feedback to assist the agency in identifying ways to enhance and evolve the program. Any questions, comments or suggestions can be sent to feedback@transitchicago.com.


# # #


Back to news
System status snapshot
‘L’ route status
Red Line
Normal Service
Brown Line
Normal Service
Green Line
Normal Service
Orange Line
Normal Service
Pink Line
Normal Service
Purple Line
Normal Service
Yellow Line
Normal Service
Bus routes w/alerts
Elevator alerts