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Sampling Frame Construction
The Highway Performance Monitoring System (HPMS) sample is a stratified simple random sample of highway links (small sections of roadway) selected from state inventory files. The 1997 sample consists of about...
TABLE 1-1. System Mileage Within the United States
Highway
The Highway Performance Monitoring System (HPMS) is the source of road mileage data and is considered reliable. (See box 1-1 for detailed information about the HPMS.) The...
AAA American Automobile Association
AADT Annual Average Daily Traffic
AAMA American Automobile Manufacturers Association
AAR Association of American Railroads
AAS Air Activity Statistics of Certificated Air...
14 CFR 121 (Air): Code of Federal Regulations, Title 14, part 121. Prescribes rules governing the operation of domestic, flag, and supplemental air carriers and commercial operators of large aircraft.
14 CFR 135 (Air): Code of Federal Regulations, Title 14, part 135. Prescribes rules...
National Transportation Statistics presents statistics on the U.S. transportation system, including its physical components, safety record, economic performance, the human and natural environment, and national security. This is a large online document...
Excel | CSV
FINANCIAL 1960 1970 1980 1990 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Operating revenues ($ millions)1 ...Excel | CSV
FINANCIAL 1960 1970 1980 1990 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 (R) 2006 2007 Operating revenues, totala (based on SIC) ($ millions) U U U 127,314 155,713 161,806 172,743 183,153 197,490 U...Excel | CSV
FINANCIAL 1960 1970 1980 1990 1994 1995 1996 1997 1998 1999 2000 2001 (R) 2002 (R) 2003 (R) 2004 (R) 2005 (R) 2006 (R) 2007 2008 Passenger operating revenues1, total ($ millions) 1,407 1,707 6,510 16,053 17,968 18,241 (R) 17,964...Excel | CSV
FINANCIAL 1960 1970d 1980 1990 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Class I a,1 ...Excel | CSV
FINANCIAL 1960 1970 1980 1990 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Operating revenues, total ($ millions) 895 1,396 7,548 8,506 8,676 9,077 8,637 8,632 8,579 9,067 8,958...