The Chicago Transit Authority (CTA) is the agency responsible for public transportation in Chicago, Illinois. It operates an extensive network of buses and trains, providing essential services to residents and visitors. The CTA's train system, known as the L, features several lines that connect various neighborhoods and key destinations throughout the city. In addition to the train service, the CTA runs numerous bus routes that cover areas not served by the L. The agency aims to offer reliable and affordable transportation options, making it easier for people to navigate the city and access jobs, education, and entertainment.