The CTA is expanding service again on a busy portion of the Blue Line to accommodate a boost in riders — something that could benefit commuters stuck in traffic due to construction on the Kennedy Expressway.
The agency already had added what it calls “short-turned” trains on a substantial part of its Blue Line route. Instead of going all the way west to the end of the Blue Line in Forest Park, some westbound trains have only as far as UIC-Halsted, then reverse course, traveling the full route into the Loop, then out to O’Hare International Airport.