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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Table B-16. Estimated Measures of Reliability for Shipment Characteristics of Temperature Controlled Shipments (1) by Mode of Transportation for the United States: 2012

Monday, July 13, 2015

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(Estimates are based on data from the 2012 Commodity Flow Survey)

Mode of transportation Value Tons Ton-miles (2) Average miles per shipment
Coefficient of Standard error of percent of total Coefficient of Standard error of percent of total Coefficient of Standard error of percent of total coefficient of
variation of number variation of number variation of number variation of number
All modes 3.2 0 2.3 0 2.1 0 6
Single modes 2.7 0.8 2.2 0.2 2.1 0.3 5.4
Truck (3) 2.9 0.7 2.3 0.7 2.6 1.2 4.6
 For-hire truck 4.7 1 4.8 1.7 3 1.2 7
 Private truck 3 1.2 3.8 1.7 2.7 0.5 2.7
Rail 9.9 0.2 10.6 0.4 8 1 8.1
Water 21.5 0.1 27.5 0.3 39.8 0.7 14.6
 Inland water 34.2 0.1 30.6 0.3 S S 24.7
 Great Lakes 0 0 0 0 0 0 0
 Deep sea 20.7 Z 12.6 Z 22.5 0.1 14.6
 Multiple waterways 30.6 Z 44.8 0.1 27.4 0.1 32.1
Air (includes truck and air) 7.4 0.1 37.2 0.1 46.8 0.4 11.1
Pipeline (4) 33.2 Z 29.4 0.1 S S S
Multiple modes 10.9 0.8 17.1 0.2 8.4 0.3 6.4
Parcel, U.S. Postal Service, or courier 11.7 0.8 15.7 Z 16.9 Z 6.6
Truck and rail 14.8 0.1 11.6 0.1 11.4 0.3 34.5
Truck and water 19.4 Z 22.9 Z 16.1 0.1 17.5
Rail and water S S S S 48 0.3 S
Other multiple modes 0 0 0 0 0 0 0
Other modes 0 0 0 0 0 0 0

KEY: S = Withheld because estimate did not meet publication standards

Z = Rounds to zero.

(1) Shipments that are temperature controlled are transported in a vehicle or container that regulates or maintains the temperature when en route to its destination.

(2) Ton-miles estimates are based on estimated distances traveled along a modeled transportation network. See “Mileage Calculations” section for additional information.

(3) “Truck” as a single mode includes shipments that were made by only private truck or only for-hire truck.

(4) Estimates for pipeline exclude shipments of crude petroleum (SCTG 16).

NOTES: 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>.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2012 Economic Census: Transportation Commodity Flow Survey, December 2014.