>>1054595In Chicago proper, and out as far west as maybe IL-83/Kingery Highway, there is pretty reasonable density, though as
>>1054939 has said, the operational arrangement is garbage. Once you start getting farther west than, say, Lombard, or north of Mount Prospect, service tapers off fast. Metra only runs sporadically, and Pace is pretty much nonexistent.
The western suburbs used to have a pretty good interurban network, but we all here know how that worked out.