CHICAGO (CBS) --If you were late to work Tuesday morning because of CTA train delays, you were not alone. Switching issues on elevated trains in the Loop delayed thousands of morning commutes.

CHICAGO (CBS ... and Ashland Avenue and 63rd Street due to the train at 63rd/Halsted just before 3 a.m. on elevated tracks 30 feet in the air. By 7:50 p.m., service on the Green Line remained ...

Labor leaders and lawmakers must address underfunding and keep buses and trains running on time, a UIC urban planning expert writes.

The best way to get around Chicago is via public transportation – specifically the L train. Operated by the Chicago Transit Authority, the L (short for "elevated train") is cheap and easy to use.