Why is the Yellow Line like this?

Today's video focuses on the Yellow Line: that fascinating little shuttle line out in Chicago's suburbs, that often feels so different from the rest of the CTA network. How long has it been like this? How did it get to be this way? Answers to those questions and more can be found here! This video is one of multiple installments in my series "The Oldest Rails". See the full playlist here:    • The Oldest Rails   This video features one or more images from NellsWiki at English Wikipedia: https://creativecommons.org/licenses/...