You can always call 311 and report a bad cab driver in Chicago. Your information will be taken down and you will receive a call back asking about the incident.

You can always call 311 and report a bad cab driver in Chicago. Your information will be taken down and you will receive a call back asking about the incident. I've done this several times. I do not know if there were any actual repercussions for the drivers but in talking to cab drivers they seem to believe there will be. This is almost exactly the same as the uber/lyft model except the uber/lyft model put that feedback mechanism front and center.