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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-6. Estimated Measures of Reliability for Shipment Characteristics by Commodity Group and Mode of Transportation for CBSA of Origin: 2002

Monday, July 2, 2012

Table B-6. Estimated Measures of Reliability for Shipment Characteristics by Commodity Group and Mode of Transportation for CBSA of Origin: 2002

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

Excel | CSV

All Commodities

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes 19.2 – 28.0 – 25.3 – 7.7
Single modes 21.0 2.6 28.7 1.3 27.2 3.4 13.4
Truck 23.2 4.5 14.8 7.2 15.0 5.9 11.5
Rail 29.5 1.0 46.9 4.0 43.3 6.5 15.7
All other Single modes 22.7 3.2 S S 44.4 3.5 6.5
Multiple modes 14.9 2.2 33.5 1.2 44.9 3.5 6.6
Parcel, USPS or courier 15.1 2.1 27.2 0.2 34.4 0.4 6.6
All other multiple modes 49.6 0.2 S S S S 21.0
Other and unknown modes 31.2 0.7 38.8 0.6 40.7 0.6 36.4

SCTG 01-05, Agriculture products and fish

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes 32.2 – 27.2 – 33.2 – S
Single modes 32.5 7.5 25.2 3.2 28.5 8.5 S
Truck 36.9 17.3 40.7 15.5 43.3 16.6 47.0
Rail – – – – – – –
All other Single modes S S S S S S 21.9
Multiple modes S S S S S S 30.6
Parcel, USPS or courier S S S S S S 29.2
All other multiple modes S S S S S S 31.6
Other and unknown modes S S S S S S 29.9

SCTG 06-09, Grains, alcohol, and tobacco products

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes 22.3 – 31.3 – 20.0 – 15.3
Single modes 25.1 5.2 30.8 0.9 19.7 1.9 S
Truck 26.2 4.8 36.3 4.7 23.0 5.5 S
Rail 19.9 2.2 22.3 4.7 18.6 6.2 10.9
All other Single modes S S S S S S 28.7
Multiple modes 35.3 5.4 37.8 0.9 39.1 1.6 23.1
Parcel, USPS or courier 41.1 5.5 S S S S 17.0
All other multiple modes S S S S 47.0 0.5 25.7
Other and unknown modes S S S S S S 37.0

SCTG 10-14, Stones, non-metallic minerals, and metallic ores

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes S S 24.8 – 25.5 – 15.7
Single modes S S 24.8 – 25.5 – 15.7
Truck S S 24.8 – 25.5 – 15.7
Rail – – – – – – –
All other Single modes – – – – – – –
Multiple modes – – – – – – –
Parcel, USPS or courier – – – – – – –
All other multiple modes – – – – – – –
Other and unknown modes S S S S S S 31.6

SCTG 15-19, Coal and petroleum products

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes 35.6 – 45.7 – 41.5 – 16.9
Single modes 35.6 – 45.7 – 41.5 – 17.2
Truck 16.5 12.4 15.3 14.7 19.3 17.0 14.9
Rail S S S S S S 28.0
All other Single modes S S S S S S S
Multiple modes S S S S S S 28.0
Parcel, USPS or courier S S S S S S 28.0
All other multiple modes – – – – – – –
Other and unknown modes – – – – – – –

SCTG 20-24, Pharmaceutical and chemical products

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes 29.4 – S S S S 19.3
Single modes 30.8 4.8 S S S S 22.8
Truck 35.4 13.6 S S S S 11.1
Rail S S S S S S 24.4
All other Single modes 23.6 10.6 S S S S 6.5
Multiple modes 27.4 3.3 37.2 0.5 S S 15.6
Parcel, USPS or courier 28.0 3.3 37.1 0.3 37.4 0.5 15.7
All other multiple modes S S S S S S 37.2
Other and unknown modes S S S S S S 26.6

SCTG 25-30, Logs, wood products, and textile and leather

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes 22.7 – 12.3 – 21.3 – 12.0
Single modes 27.4 6.1 11.8 2.8 18.0 4.7 16.6
Truck 27.3 6.0 12.2 2.9 19.6 6.3 24.5
Rail 47.0 0.3 42.0 0.6 44.7 2.4 23.0
All other Single modes 49.4 0.6 41.9 – 46.1 0.2 16.6
Multiple modes 31.5 5.5 39.2 2.1 46.4 4.6 10.1
Parcel, USPS or courier 39.2 5.9 24.9 1.5 27.1 2.9 10.1
All other multiple modes S S S S S S 23.8
Other and unknown modes S S 35.4 1.0 S S S

SCTG 31-34, Base metal and machinery

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes 25.9 – S S 23.6 – 16.3
Single modes 29.8 7.4 S S 24.7 1.9 15.9
Truck 29.7 7.4 S S 24.7 1.9 15.6
Rail – – – – – – –
All other Single modes S S S S S S 26.2
Multiple modes S S 48.3 0.7 44.7 1.9 13.5
Parcel, USPS or courier S S 48.3 0.7 44.7 1.9 13.5
All other multiple modes – – – – – – –
Other and unknown modes 48.9 1.1 S S S S 28.7

SCTG 35-38, Electronic, motorized vehicles, and precision instruments

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes 22.4 – S S 23.9 – 7.4
Single modes 37.7 12.7 S S 25.6 13.2 7.7
Truck 27.7 8.9 S S 27.2 11.9 17.9
Rail – – – – – – –
All other Single modes 45.1 14.4 46.2 2.3 37.2 3.9 11.4
Multiple modes 36.4 12.5 42.2 13.2 S S 7.7
Parcel, USPS or courier 36.4 12.5 42.2 13.2 S S 7.7
All other multiple modes – – – – – – –
Other and unknown modes S S S S S S 29.7

SCTG 39-43, Furniture, mixed freight and misc manufactured products

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes 13.3 – 29.9 – 15.8 – 12.2
Single modes 16.7 7.8 27.1 3.9 16.3 4.1 39.8
Truck 16.7 7.8 27.1 3.9 16.3 4.1 40.0
Rail S S S S S S 36.4
All other Single modes S S S S S S 28.6
Multiple modes 27.0 7.7 29.5 4.1 32.7 4.2 12.8
Parcel, USPS or courier 27.0 7.7 29.8 3.9 33.7 3.9 12.8
All other multiple modes S S S S S S 27.9
Other and unknown modes 42.7 0.2 S S S S 26.7

Commodity Unknown

Mode of transportation Value Tons Ton-miles CV of average miles per shipment
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All modes S S S S S S 25.6
Single modes S S S S S S S
Truck S S S S S S S
Rail – – – – – – –
All other Single modes – – – – – – –
Multiple modes S S S S S S 28.2
Parcel, USPS or courier S S S S S S 28.2
All other multiple modes – – – – – – –
Other and unknown modes S S S S S S 31.6

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.
CV Coefficient of variation of number

NOTE: The Introduction and appendixes give information onf 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: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Metropolitan Data, December 2004.