Table 2b. Shipment Characteristics by Total Modal Activity for the United States: 2007 and 2002

Table 2b. Shipment Characteristics by Total Modal Activity for the United States: 2007 and 2002

[Estimates are based on data from the 2007 and 2002 Commodity Flow Surveys. Because of rounding, estimates may not be additive]

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Mode of transportation1 Ton-miles2 Percent change Average miles per shipment Percent change Ton-miles CV3 Ton-miles Std. error of % change Average miles CV Avg. miles Std. error of % change
2007
(millions)
2002
(millions)
2007 2002 2007 2002 2007 2002
Total 3,344,663 3,137,902 6.6 610 536 13.8 3.6 3.7 5.4 2.5 2.8 4.3
Truck 1,351,531 1,261,813 7.1 203 168 20.7 1.4 2.8 3.3 4.4 3.6 6.9
Rail 1,549,557 1,360,760 13.9 852 893 -4.6 7.7 7.6 12.1 4.6 6.1 7.3
Shallow draft 208,611 258,386 -19.3 217 459 -52.8 10 9.4 11.1 9.9 13.1 7.8
Great Lakes 30,835 49,330 -37.5 426 354 20.4 27.9 18.1 20.7 9.2 16 22.2
Deep draft 92,060 75,544 21.9 1,431 1,498 -4.5 17.1 17.3 29.9 6.9 11.1 12.5
Air 4,425 5,659 -21.8 1,080 1,866 -42.1 9.6 15.7 14.4 2.5 4.3 2.9
Parcel, U.S.P.S. or courier 27,852 19,004 46.6 971 894 8.7 3 4.2 7.6 2.3 2.3 3.6
Pipeline4 S S S S S S S S S S S S
Other and unknown modes 33,510 44,253 -24.3 112 130 -13.7 9.3 9.7 10.3 12.7 13 15.7

KEY: S = Estimate does not meet publication standards because of high sampling variability or poor response quality.

1 Estimates represent activity for a given mode across single and multiple mode shipments. For example, "Truck" ton-miles includes total ton-miles for shipments moving only by truck plus ton-miles for truck segments of multiple mode shipments.
2 Ton-miles estimates are based on estimated distances traveled along a modeled transportation network.
3 Coefficient of Variation.
4 Estimates exclude shipments of crude petroleum (SCTG 16).

NOTES: Value-of-shipment estimates are reported in current prices. Estimated measures of sampling variability for each estimate known as coefficients of variation (CV) are also provided in these tables. More information on sampling error, confidentiality protection, nonsampling error, sample design, and definitions may be found at http://www.bts.gov/cfs.

SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2007 Economic Census: Transportation Commodity Flow Survey, December 2009.