Discussion of Trust Funds

There are five transportation-related federal trust funds established by law, namely, the Highway Trust Fund (HTF), Airport and Airways Trust Fund (AATF), Harbor Maintenance Trust Fund (HMTF), Inland Waterways Trust Fund (IWATF), and Oil Spill Liability Trust Fund (...

Data Sources

The principal source for federal financial 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 for...

Data Limitations and Coverage

The list below contains the major limitations of the database that users should take into consideration:

Data Adjustment

Revisions and corrections to previously published data have been made in most cases. The base year for chained dollars data for this report is 1996, whereas the earlier version was presented in chained 1992 dollars. The following adjustments have been incorporated.

Appendix II - Glossary and List of Acronyms

Terminology and definitions used herein are the same as those used in the Budget of the United States Government, Fiscal Year 1991 and more fully described in A Glossary of Terms Used in the Federal Budget Process, January 1993. Other...

Government Transportation Financial Statistics 2001

Table 7-6: Highway Noise Barriers: 1999

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Table 7-5: Wyoming Air Quality Nonattainment Areas for Particulate Matter (PM-10)

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Table 7-4: Wyoming and U.S. Motor-Fuel Use: 2000

(Millions of gallons)

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Table 7-3: Transportation Energy Consumption per Capita: 1999

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