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Average Length of Haul, Domestic Freight and Passenger Modes (Miles)

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Notes: 

Average length of haul for freight is calculated by dividing ton-miles by estimates of tonnage from the various data sources. The calculation of average length of haul for passenger trips varies by mode:  for air carrier it is calculated by dividing revenue passenger-miles by revenue passenger enplanements; for commuter rail and Amtrak it is calculated by dividing passenger-miles by number of passengers.

Eno Transportation Foundation has discontinued some data series years prior to 1990.

Description: 

KEY: N = data do not exist; U = data are unavailable.

a Amtrak began operations in 1971.  Data are reported for fiscal years.

Source: 

Freight:

Air carrier:

1991-01: U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Air Freight Summary Data (U.S. Carriers), special tabulation, available at http://www.transtats.bts.gov/rtm91_02.htm as of Aug. 18, 2011.

2002: Ibid., TranStats Database, T-100 Market Data, special tabulation, Mar. 18, 2010.

2003-14: Ibid., Air Cargo Summary Data (All U.S. Carriers), special tabulation, available at http://www.transtats.bts.gov/freight.asp as of Aug. 2016.

Class I rail:

Association of American Railroads, Railroad Facts (Washington, DC: Annual Issues), pp. 30, 31, and similar pages in previous editions.

Water:

U.S. Army Corps of Engineers, Waterborne Commerce of the United States, Part 5 (New Orleans, LA: Annual Issues), section 1, table 1-4, available at http://www.navigationdatacenter.us/wcsc/wcsc.htm as of Nov. 15, 2016.

Oil pipeline:

1960-70: Transportation Policy Associates, Washington, DC, personal communication.

Passenger: 

Air carrier:

1960-99: U.S. Department of Transportation, Bureau of Transportation Statistics, Office of Airline Information, Air Carrier Traffic Statistics, T-100 Segment Data (Washington, DC: Annual Issues), p. 3 and similar pages in previous issues.

2000-14: Ibid., TranStats Database, T-100 Market Data and T-100 Segment Data, special tabulation, available at http://www.transtats.bts.gov/Data_Elements.aspx?Data=3 as of Nov. 2016.

Commuter Rail:

1980-95: American Public Transportation Association, Public Transportation Fact Book, Appendix A: Historical Tables (Washington, DC: April 2011), table 3, available at http://www.apta.com/resources/statistics/Pages/transitstats.aspx as of Aug. 18, 2011.

1996-14: U.S. Department of Transportation, Federal Transit Administration, National Transit Database (Washington, DC: Annual Issues), table 19 and similar tables in earlier editions, available at http://www.ntdprogram.gov/ntdprogram/data.htm as of Nov. 2016.

Amtrak:

1970-85: Amtrak, personal communication, Jan. 26, 1999.

1990-02: Amtrak, Amtrak Annual Report (Washington, DC: 2003), Statistical Appendix.

2003-14: Association of American Railroads, Railroad Facts (Washington, DC: Annual Issues), p. 77 and similar pages in previous editions.

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