Data Sources

Data Sources

Various data sources are used to compile the data in this report. The principal source of federal data is the Annual Budget of the United States Government published by the Office of Management and Budget (OMB). The numbers are consistent from year to year and follow the definitional structure required by OMB. The primary source of state and local government data is the U.S. Census Bureau. The Census Bureau conducts Census of Governments at five-year intervals for years ending in 2 and 7. The results of this Census provide comprehensive statistical information about state and local government financial activities. The data for census years are full counts and not subject to sampling errors. In non-census years, state and local data are collected through annual surveys, which are subject to sampling errors. Detailed data sources by mode and level of government are provided in Table 2 below.

Table 2. Data Sources for Government Transportation Revenues, Expenditures, Grants, Budget Authority, and Obligations

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Mode Level of Government Data Source
Highway Federal Revenues:U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, D.C.: Annual issues), table-210. Expenditures and Grants:For 1991 and preceding yearsEstimated based on data from U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, D.C.: Annual issues), and Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues). For 1992 and the latest year availableU.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, D.C.: Annual issues), table FA-5.Capital Expenditures:U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, D.C.: Annual issues), table HF-10ABudget Authority:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Obligations:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues).
Highway State & Local Revenues, Expenditures, and Capital Expenditures:U.S. Department of Commerce, Bureau of the Census, State and Local Government Finance Estimates (Washington, D.C.), available at ftp://ftp.census.gov/pub/outgoing/govs/, as of May 2004.
Transit Federal Revenues:U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, D.C.: Annual issues), table FE-210.Expenditures and Grants:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Capital Expenditures:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004. Budget Authority:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Obligations:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues).
Transit State & Local Revenues, Expenditures, and Capital Expenditures:U.S. Department of Commerce, Bureau of the Census, State and Local Government Finance Estimates (Washington, D.C.), available at ftp://ftp.census.gov/pub/outgoing/govs/, as of May 2004.
Rail Federal Revenues:See discussion on page 19.Expenditures and Grants:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Capital Expenditures:For 1995 and preceding years personal communication with FRA. After 1995 - Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Budget Authority:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Obligations:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues).
Rail State & Local Estimated based on information from Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.
Air Federal Revenues:U.S. Department of Transportation, Federal Aviation Administration, Budget in Brief, (Annual issues), available at http://www.faa.gov/aba/html_budget/index.html, as of May 2004. Expenditures and Grants:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004. For NASA - NASA, Aeronautics and Space Report of the President (Washington, D.C.: Annual issues), available at http://www.hq.nasa.gov/hq/nasrepts.htm, as of May 2004.Capital Expenditures:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004. For NASA - NASA, Aeronautics and Space Report of the President (Washington, D.C.: Annual issues), available at http://www.hq.nasa.gov/hq/nasrepts.htm, as of May 2004.Budget Authority:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004. For NASA - NASA, Aeronautics and Space Report of the President (Washington, D.C.: Annual issues), available at http://www.hq.nasa.gov/hq/nasrepts.htm, as of May 2004.Obligations:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues).
Air State & local Revenues, Expenditures, and Capital Expenditures:U.S. Department of Commerce, Bureau of the Census, State and Local Government Finance Estimates (Washington, D.C.), available at ftp://ftp.census.gov/pub/outgoing/govs/, as of May 2004.
Water Federal Revenues:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues). Expenditures and Grants:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004 except U.S. Army Corps of Engineers (USACE). For USACE -personal communication.Capital Expenditures:For MARAD and USCG - Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004. For Saint Lawrence Seaway Development Corporation, Panama Canal Commission, and USACE - personal communication.Budget Authority:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004 except U.S. Army Corps of Engineers (USACE). For USACE -personal communication.Obligations:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues) except U.S. Army Corps of Engineers (USACE). For U.S. Army Corps of Engineers (USACE) personal communication.
Water State & Local Revenues, Expenditures, and Capital Expenditures:U.S. Department of Commerce, Bureau of the Census, State and Local Government Finance Estimate (Washington, D.C.), available at ftp://ftp.census.gov/pub/outgoing/govs/, as of May 2004.
Pipeline Federal Revenues:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues).Expenditures and Grants:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Capital Expenditures:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Budget Authority:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Obligations:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues).
General Support Federal Revenues:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues). Expenditures:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Budget Authority:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Fiscal Year 2005 - Public Budget Database (Washington, D.C.), available at http://w3.access.gpo.gov/usbudget/, as of May 2004.Obligations:Executive Office of the President of the United States, Office of Management and Budget, Budget of the United States Government Appendix (Washington, D.C.: Annual issues).