Table 4-24M: Energy Intensity of Transit Motor Buses

Table 4-24M: Energy Intensity of Transit Motor Buses

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  1960 1965 1970 1975 1980 1985 1990 1991 1992 1993 1994 1995 (R) 1996 (R) 1997 (R) 1998 (R) 1999 (R) 2000 (R) 2001 (R) 2002 (R) 2003 (R) 2004 (R) 2005 2006 2007 2008 2009
Vehicle-kilometers (millions) (R) 2,537 (R) 2,460 2,268 2,456 2,699 2,998 3,428 3,487 3,505 3,556 3,479 3,514 2,692 2,744 2,841 2,931 2,993 3,079 3,077 2,997 2,976 2,961 2,956 2,995 3,050 3,060
Passenger-kilometers (millions) N N N N (R) 35,068 (R) 34,055 33,766 33,941 32,728 32,584 30,307 30,285 25,460 26,565 27,248 28,253 28,365 29,535 29,104 27,463 26,847 27,413 28,149 28,131 29,449 28,976
Energy consumed                                                    
Diesel fuel (million liters) 787 939 1,026 1,382 1,632 1,961 2,132 2,169 2,241 2,179 2,139 2,134 1,763 1,754 1,773 1,804 1,853 1,862 1,773 1,672 1,668 1,421 1,597 1,535 1,526 1,462
Compressed Natural Gas (million liters) N N N N N N N N N N N 38 38 67 103 126 159 193 246 296 323 351 413 402 421 470
Bio-diesel (million liters) N N N N N N N N N N N N N N N N N N 3 3 8 195 61 78 125 134
Liquefied natural gas (million liters) N N N N N N N N N N N 6 8 12 10 17 33 37 53 44 50 55 58 57 56 52
Gasoline (million liters) N N N N N N N N N N N 9 4 5 6 4 4 5 4 3 5 3 7 7 11 11
Other major fuelsa (million liters) N N N N N N N N N N N N 43 34 16 9 3 4 8 8 8 11 8 4 3 4
Powerb (million KWH) N N N N N N N N N N N N 0 0 1 1 1 1 3 1 2 1 1 1 1 1
Energy consumed, total (Billion kilojoules) N N N N N N N N N N N N 69,603.1 69,471.5 69,992.2 71,266.4 73,643.6 74,333.7 71,846.4 68,022.7 68,388.6 65,720.8 68,316.9 66,321.8 67,780.2 65,974.7
Diesel fuel 30,437.9 36,291.4 39,657.1 53,412.7 63,070.9 75,816.8 82,409.4 83,830.3 86,638.2 84,251.6 82,689.4 82,499.6 68,159.8 67,799.1 68,541.0 69,750.9 71,645.9 71,973.7 68,535.1 64,642.3 64,463.8 54,914.0 61,728.8 59,336.9 58,981.3 56,523.4
Compressed Natural Gas N N N N N N N N N N N 237.4 240.3 420.4 647.0 789.9 999.5 1,211.3 1,542.7 1,856.4 2,027.0 2,198.5 2,589.3 2,521.5 2,640.4 2,950.1
Bio-diesel N N N N N N N N N N N N N N N N N N 103.1 113.4 282.7 6,849.6 2,138.2 2,745.3 4,379.6 4,721.4
Liquefied natural gas N N N N N N N N N N N 152.1 200.4 288.9 229.9 392.1 781.3 874.6 1,252.9 1,049.4 1,178.0 1,294.8 1,381.4 1,354.1 1,330.4 1,237.7
Gasoline N N N N N N N N N N N 303.3 132.0 174.5 199.4 142.6 133.7 162.5 139.3 121.6 189.9 101.8 243.3 251.3 373.5 394.4
Other major fuelsa N N N N N N N N N N N N 867.4 786.0 368.0 182.2 73.0 100.9 245.8 224.8 226.4 349.1 222.9 101.5 65.1 122.0
Powerb N N N N N N N N N N N N 3.2 2.6 6.8 8.7 10.2 10.7 27.5 14.8 20.7 13.0 13.0 11.2 10.0 7.7
Energy intensity (kilojoules/passenger-kilometer) N N N N N N N N N N N N 2,734 2,615 2,569 2,522 2,596 2,517 2,469 2,477 2,547 2,397 2,427 2,358 2,302 2,277

KEY: N = data do not exist; R = revised.

a Before 2002, Other major fuels include liquefied petroleum gas, methanol, ethanol, and bunker fuel. From 2002 to 2009, Other major fuels include liquefied petroleum gas, methanol, ethanol, bunker fuel, kerosene, and grain additive.

bPower includes electric propulsion and electric battery.

NOTES

Data from 1996 and after are not comparable to the data for earlier years or to the data published in previous editions of the report due to different data sources used.

Data from 1996 and after are for those vehicles used for directly operated (DO) services only .

Energy consumed, total does not include the other types of energy identified in table 17 in the National Transit Database due to the lack of information on the unit of measurement for such data before 2008.

The following conversion rates were used:

Diesel =38,657.95 kilojoules/liter.

Compressed Natural Gas = 6,271.117 kilojoules/liter.

Bio-Diesel = 35,174.00 kilojoules/liter.

Liquefied natural gas = 23,635.15 kilojoules/liter.

Gasoline = 34,839.54 kilojoules/liter.

Liquefied petroleum gas = 25,446.80 kilojoules/liter.

Methanol = 18,005.07 kilojoules/liter.

Ethanol = 23,579.40 kilojoules/liter.

Bunker fuel = 41,723.83 kilojoules/liter.

Kerosene = 37,626.70 kilojoules/liter.

Grain additive = 33,696.80 kilojoules/liter.

Electricity 1KWH = 3,412 Btu, negating electrical system losses. This table includes approximate electrical system losses, and thus the conversion factor is multiplied by 3.

1.609344 kilometers = 1 mile.

3.785412 liters = 1 gallon.

1.055056 kilojoules = 1 British thermal unit (Btu).

SOURCES

1960-95: American Public Transportation Association, 2010 Public Transportation Fact Book Appendix A: Historical Tables (Washington, DC: Annual Issues), tables 2, 6, 30, 32 and similar tables in earlier editions, available at http://www.apta.com/resources/statistics/Pages/transitstats.aspx as of Aug 23, 2010.

1996-2009: U.S. Department of Transportation, Federal Transit Administration, National Transit Database, tables 17, 19, and similar tables in earlier editions, available at http://www.ntdprogram.gov/ntdprogram/data.htm as of Dec. 20, 2010.