Stop IDs appear right in transit directions given by Google Maps whenever you receive CTA bus results.
If you use Google Transit to plan your trip, you’ll see stop IDs for any bus stop you use along the way, like this:
Jot down the stop IDs you plan to look up. If this was your trip and you want estimated arrival times, you’d text ctabus 5793 to 41411 as you approached your stop. (Learn more about how to use this service)
Remember: Message and data rates may apply. Check with your mobile carrier first.