Hello how may I help you? I would like to ask about transit systems. Yes, I can answer any question Great. I want to ask about the transit systems in Chicago. sure thing, what do you want to know I'd like to know when the subways are going to start running. The subways in Chicago usually start running at 6 am 6:00 AM. Got it, that's great. Do you know when the subway stops? the subways stop at 11:30 pm 11:30 PM. Okay, good. Thank you very much for the help! you are welcome