Table 4-24:  Energy Intensity of Transit Motor Buses ,,,,,,,,,,,,,,,,,,,,,,
,1960,1965,1970,1975,1980,1985,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005
Vehicle-miles (millions),"1,576","1,528","1,409","1,526","1,677","1,863","2,130","2,167","2,178","2,210","2,162","2,184","2,221","2,245","2,175","2,276","2,315","2,377","2,411","2,421","2,471","2,495"
Passenger-miles (millions),N,N,N,N,"21,800","21,200","20,981","21,090","20,336","20,247","18,832","18,818","19,096","19,604","20,360","21,205","21,241","22,022","21,841","21,262","21,377","21,825"
Fuel consumed (million gallons diesel) ,208,248,271,365,431,518,563,573,592,576,565,564,578,598,607,618,635,587,559,539,550,534
Energy intensity (Btu / passenger-mile),N,N,N,N,"2,742","3,389","3,723","3,767","4,038","3,944","4,162","4,155","4,196","4,228","4,133","4,044","4,147","3,698","3,550","3,514","3,572","3,394"
KEY:  Btu = British thermal unit; N = data do not exist.,,,,,,,,,,,,,,,,,,,,,,
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NOTE,,,,,,,,,,,,,,,,,,,,,,
"Heat equivalent factor used for Btu is 138,700 Btu/gallon.  ",,,,,,,,,,,,,,,,,,,,,,
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SOURCE,,,,,,,,,,,,,,,,,,,,,,
"American Public Transportation Association, 2007 Public Transportation Fact Book (Washington, DC: 2007), tables 55, 10, 12, 27, and similar tables in earlier editions, Internet site http://www.apta.com/ as of Nov. 27, 2007. ",,,,,,,,,,,,,,,,,,,,,,