Chicago Transport is a public transportation system in the city of Chicago, Illinois. It consists of two main components: the 'L' (or Elevated) and the bus system. The 'L' is a rapid transit system that operates on elevated tracks throughout the city, while the bus system provides service to areas not served by the 'L'. The 'L' is operated by the Chicago Transit Authority (CTA), while the bus system is operated by the Regional Transportation Authority (RTA). The 'L' is abbreviated as 'ELL' and the bus system is abbreviated as 'EL'.