Table 4-25:  Energy Intensity of Class I Railroada Freight Service,,,,,,,,,,,,,,,,,,,,,,,
,1960,1965,1970,1975,1980,1985,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006
Revenue freight ton-miles (millions),"572,309","697,878","764,809","754,252","918,958","876,984","1,033,969","1,038,875","1,066,781","1,109,309","1,200,701","1,305,688","1,355,975","1,348,926","1,376,802","1,433,461","1,465,960","1,495,472","1,507,011","1,551,438","1,662,598","1,696,425","1,771,897"
Car-miles (millions),"28,170","29,336","29,890","27,656","29,277","24,920","26,159","25,628","26,128","26,883","28,485","30,383","31,715","31,660","32,657","33,851","34,590","34,243","34,680","35,555","37,071","37,712","38,955"
Tons per car load,44.4,48.9,54.9,60.8,67.1,67.7,66.6,66.2,66.0,64.4,63.4,65.3,66.6,63.4,64.1,63.4,62.6,64.0,63.3,62.3,61.3,61.0,60.9
Fuel consumed (million gallons),"3,463","3,592","3,545","3,657","3,904","3,110","3,115","2,906","3,005","3,088","3,334","3,480","3,579","3,575","3,583","3,715","3,700","3,710","3,730","3,826","4,059","4,098","4,192"
Energy intensity (Btu/revenue freight ton-mile),839,714,643,672,589,492,418,388,391,386,385,370,366,368,361,359,350,344,343,342,339,335,328
Energy intensity (Btu/car-mile),"17,051","16,983","16,450","18,341","18,495","17,310","16,516","15,727","15,952","15,932","16,234","15,886","15,652","15,662","15,218","15,222","14,836","15,027","14,918","14,925","15,187","15,072","14,926"
KEY:  Btu = British thermal unit.,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,
a Class I railroads are those that have operating revenues of $289.4 million or more in 2004.,,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,
NOTE,,,,,,,,,,,,,,,,,,,,,,,
"The heat equivalent factor used for Btu conversion is 138,700 Btu/gallon.",,,,,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,,,,
SOURCE,,,,,,,,,,,,,,,,,,,,,,,
"Association of American Railroads, Railroad Facts 2007 (Washington, DC: 2007), pp. 34, 37, and 40, and similar tables in earlier editions.",,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,,



,,,,,,,,,,,,,,,,,,,,