TABLE 45/46 Transit Ridership by Selected Type of Service: 1991–2001,,,,,,,,,,,,,, (Millions of unlinked trips),,,,,,,,,,,,,, ,,,,,,,,,,,,,, ,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,,, Bus,"4,826","4,749","4,639","4,629","4,579","4,506","4,602","4,754","4,992","5,040","5,215",,, Commuter rail,324,314,321,339,344,352,357,381,396,413,418,,, Heavy rail,"2,167","2,207","2,046","2,169","2,034","2,157","2,430","2,393","2,521","2,632","2,728",,, Light rail,184,188,188,282,249,259,259,273,289,316,334,,, Total,"7,738","7,696","7,433","7,702","7,504","7,565","7,954","8,115","8,523","8,720","9,008",,, "NOTE: Total includes other modes not shown, such as ferryboats, demand responsive, inclined planes, and trolley buses.",,,,,,,,,,,,,, "SOURCE: U.S. Department of Transportation, Federal Transit Administration, ""National Transit Summaries and Trends,"" 2002 draft, available at http://www.ntdprogram.com, as of February 2003.",,,,,,,,,,,,,,