US Table 1a,,,,,,,
"Shipment Characteristics by Mode of Transportation for the United States: 2002
",,,,,,,
"[Estimates are based on data from the 2002 Commodity Flow Survey. Because of rounding, estimates may not be additive]
",,,,,,,
Mode of Transportation,Value,,Tons,,Ton–miles (1),,Average miles per shipment
," 2002 
(million $) ",Percent of total,"2002 
(thousands)",Percent of total,"2002 
(millions)",Percent of total,
Total,"8,397,210",100.0,"11,667,919",100.0,"3,137,898",100.0,546
Single modes,"7,049,383",83.9,"11,086,660",95.0,"2,867,938",91.4,240
Truck (2),"6,235,001",74.3,"7,842,836",67.2,"1,255,908",40.0,173
For-hire truck,"3,757,114",44.7,"3,657,333",31.3,"959,610",30.6,523
Private truck,"2,445,288",29.1,"4,149,658",35.6,"291,114",9.3,64
Rail,"310,884",3.7,"1,873,884",16.1,"1,261,612",40.2,807
Water,"89,344",1.1,"681,227",5.8,"282,659",9.0,568
Shallow draft,"57,467",0.7,"458,577",3.9,"211,501",6.7,450
Great Lakes,843,—,"38,041",0.3,"13,808",0.4,339
Deep draft,"31,034",0.4,"184,610",1.6,"57,350",1.8,664
Air (incl truck and air),"264,959",3.2,"3,760",—,"5,835",0.2,"1,919"
Pipeline (3),"149,195",1.8,"684,953",5.9,S,S,S
Multiple modes,"1,079,185",12.9,"216,686",1.9,"225,715",7.2,895
"Parcel, U.S.P.S. or courier","987,746",11.8,"25,513",0.2,"19,004",0.6,894
Truck and rail,"69,929",0.8,"42,984",0.4,"45,525",1.5,"1,413"
Truck and water,"14,359",0.2,"23,299",0.2,"32,413",1.0,"1,950"
Rail and water,"3,329",—,"105,107",0.9,"114,986",3.7,957
Other multiple modes,"3,822",—,"19,782",0.2,"13,788",0.4,S
Other and unknown modes,"268,642",3.2,"364,573",3.1,"44,245",1.4,130
"
KEY: 
—  Represents data cell equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of high sampling variability or poor response quality.",,,,,,,
"(1) Ton–miles estimates are based on estimated distances traveled along a modeled transportation network. See the ""Mileage Calculation"" section for additional information.
(2) ""Truck"" as a single mode includes shipment that were made by only private truck only for-hire truck, or a combination of private and for-hire truck.
(3) Estimates for pipeline exclude shipments of crude petroleum.",,,,,,,
"NOTE: Value-of-shipment estimates have not been adjusted for price changes. Appendix B tables provide estimated measures of sampling variability. The Introduction and appendixes give information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at www.census.gov/cfs. 
Coverage for the 2002 Commodity Flow Survey (CFS) differs from the previous surveys due to a change from the 1987 Standard Industrial Classification System to the 1997 North American Industry Classification System and other survey improvements. Therefore, data users are urged to use caution when comparing 2002 CFS estimates with estimates from prior years.",,,,,,,
"SOURCE:  Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, United States Data, December 2004.",,,,,,,