Dallas is a large city located in the US state of Texas. It is an industrial and scientific center as well as an important transport hub. The fast DART Light Rail tram operating four color-coded lines: red, green, blue and orange, is a characteristic feature of the urban landscape. The trams belong to the Dallas Area Rapid Transit agency, which launched the modern Light Rail system on 14 June 1996. The last orange line was opened in August 2014 and it leads to Dallas-Fort Worth International Airport.