Chicago has the largest public transportation system in the country and getting around the city is fast, easy and inexpensive, with an extensive network of rapid transit trains and buses. The train system has both underground lines and elevated tracks above the city and is known as the El; most visitors only use the El, but buses also cover every part of the city including the suburbs, albeit less regularly. Most train lines run 24 hours a day, with Overnight or Night Owl services taking over between midnight and 5am, though only on some lines. The Metra commuter trains link the city to the outer
suburbs, including Lake Michigan, Hyde Park and McCormick Place. Fares for the bus, subway and the El are standard, and a variety of visitor passes are available offering more economical travel. During the summer months, a free trolley system operates in the downtown area, connecting Chicago's top cultural attractions, shopping areas and visitor destinations. Taxis are easy to find, and the metered rates are reasonable for short journeys. Although traffic is not as bad as in other major cities (outside rush hour), parking is expensive and difficult to find.
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