Commuters of Chicago public transit trains can now stay informed of when the next train will arrive.

The CTA has released a public beta of Train Tracker. Accessing the site by desktop or mobile phone, the service allows commuters to receive estimated arrival times of trains at each station, similar to its Bus Tracker system.

Like the Bus Tracker, the service uses live train location data to predict when a train will arrive based on recent travel times. But unlike the Bus Tracker, users see a simpler interface that doesn't require directional inputs, only train line and station. This is because the El system only has about 2% of the stops that the bus system has.

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