Central itself as well as to the streets (see ). Escalators connect this mezzanine to the Flushing Line, although there are also staircases and passageways directly between the Lexington Avenue and Flushing Lines' platforms. The Flushing Line platform also has its own exit at its extreme eastern end, though all other exits are through the Lexington Avenue Line platforms and mezzanine. Outside the Lexington Avenue Line mezzanine's fare control, there are stairs, escalators, and an elevator to Grand Central. An east-west passageway connects the Lexington Avenue Line's mezzanine to the 42nd Street Shuttle, which also has its own dedicated entrance and exit stairs. The whole station is handicapped accessible, as is the connection to Grand Central Terminal. In 2000, the Lexington Avenue Line station received air conditioning after Metro-North Railroad installed chillers for Grand Central Terminal. The chillers cost $17 million to install and are capable of cooling up to 3,000 tons of air. The Lexington Avenue Line station is one of a very small number of artificially cooled stations in the New York City Subway. The Flushing Line platforms have been equipped with fans, but not an air-cooling system. In 2014, the Metropolitan Transportation Authority installed an online, interactive touchscreen computer program called "On The Go! Travel Station" (OTG) in Grand Central. The self-updating kiosks allow people to route their trips and check for delays. The MTA set up the map as part of a pilot project in five subway stations. It lists any planned work or service changes, as well as information to help travelers find nearby landmarks and addresses. Exits The station has numerous exits into Grand Central Terminal, to the street level, and inside several buildings along 42nd Street and Park Avenue. The station had more entrances inside buildings than any other IRT station, with 14 such entrances in 1930. Present-day exits include: One Vanderbilt, north side of 42nd Street between Madison Avenue and Vanderbilt Avenue The Chrysler Building through a passage immediately to the left of the customer service booth on the station's mezzanine The Pershing Square Building, 125 Park Avenue 110 East 42nd Street through a passage downtown of the main mezzanine through their own fare control The Chanin Building, 122 East 42nd Street, through its own turnstiles directly accessing the escalators to the IRT Flushing Line platform (east of the mezzanine) Grand Hyatt New York, west side of Lexington Avenue north of 42nd