(MCT) — A roomful of highway engineers along with commuters frustrated over wasting time and fuel in traffic doodled with colored markers Thursday on maps of the Circle Interchange to highlight scary and dangerous merges and stew over possible solutions to congestion.

The focus of their attention was five preliminary concepts, which could be expanded to dozens of variations when all is said and done, to redesign the Circle Interchange, which is a spaghetti bowl of ramps where the Kennedy, Dan Ryan and Eisenhower expressways converge, along with Congress Parkway, near downtown Chicago.