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

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 28.5 12.3 8.0 39.3
Single modes 30.4 2.9 12.4 2.1 9.2 2.1 31.5
Truck 33.8 4.4 12.5 5.3 15.0 5.0 32.2
Rail 25.4 0.9 19.7 2.7 15.9 4.5 16.3
All other Single modes 41.8 3.1 39.3 2.6 40.9 1.4 19.8
Multiple modes 43.7 2.8 31.5 0.6 30.2 2.0 12.4
Parcel, USPS or courier 47.7 2.8 36.5 32.7 12.3
All other multiple modes 25.9 0.2 31.9 0.6 30.8 2.0 39.3
Other and unknown modes 38.0 0.4 S S 40.9 0.2 S
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 26.0 45.7 22.6 S
Single modes 26.0 45.7 22.6 S
Truck 26.0 45.7 22.6 S
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 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 24.3 28.6 43.2 45.8
Single modes 25.2 2.6 28.7 1.1 44.4 3.4 42.8
Truck 25.3 2.9 28.4 1.8 46.1 4.6 42.5
Rail S S S S S S 31.6
All other Single modes S S S S 47.8 26.6
Multiple modes 47.1 2.6 44.0 1.1 42.5 3.4 25.5
Parcel, USPS or courier S S S S S S 29.5
All other multiple modes 47.1 2.6 44.0 1.1 42.5 3.4 26.0
Other and unknown modes
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 9.9 17.3 11.9 27.2
Single modes 11.9 4.5 18.1 4.0 12.2 0.8 25.4
Truck 12.3 4.4 18.3 7.3 24.0 7.8 27.9
Rail 18.0 3.9 25.4 7.0 21.9 8.0 39.9
All other Single modes
Multiple modes S S S S S S 31.9
Parcel, USPS or courier
All other multiple modes S S S S S S 31.9
Other and unknown modes S S S S S S 29.2
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 26.1 20.0 26.6 47.9
Single modes 26.7 4.1 21.3 3.7 29.9 7.2 49.2
Truck 33.4 13.4 21.5 12.7 19.5 14.3 43.3
Rail 32.4 2.8 29.3 2.8 37.3 9.6 30.8
All other Single modes 42.7 14.5 40.4 12.9 44.0 7.5 24.2
Multiple modes S S S S S S 30.0
Parcel, USPS or courier S S S S S S S
All other multiple modes S S S S S S 29.9
Other and unknown modes S S S S S S 34.8
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 24.9 46.1 28.2 S
Single modes 24.4 0.6 46.8 1.2 28.5 1.0 S
Truck 26.7 4.2 S S 35.7 8.7 S
Rail 30.4 4.1 42.7 7.1 37.4 9.4 20.0
All other Single modes S S S S S S 25.7
Multiple modes 42.4 0.2 S S S S S
Parcel, USPS or courier 42.4 0.2 S S S S S
All other multiple modes
Other and unknown modes S S 42.5 1.2 S S S
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 27.7 30.9 36.1 32.3
Single modes 28.0 1.3 31.4 1.8 37.5 5.1 31.9
Truck 26.5 5.4 29.9 9.2 44.5 10.9 36.0
Rail 45.2 5.6 43.1 10.1 44.4 13.2 21.2
All other Single modes S S S S S S 31.6
Multiple modes S S S S S S 25.2
Parcel, USPS or courier S S S S S S 24.8
All other multiple modes S S S S S S 31.6
Other and unknown modes S S S S 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 10.2 50.0 29.8 S
Single modes 11.3 4.2 S S 46.0 12.2 S
Truck 11.1 4.1 S S S S S
Rail S S S S S S 28.0
All other Single modes S S S S S S 27.1
Multiple modes 38.7 3.9 41.3 10.9 39.2 12.2 11.9
Parcel, USPS or courier 41.1 3.9 43.9 1.8 S S 10.9
All other multiple modes 42.6 0.2 42.0 11.0 40.4 12.6 S
Other and unknown modes 44.9 1.4 43.5 1.8 S S S
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 S S S S S S 21.2
Single modes S S S S S S 40.2
Truck S S S S S S 30.7
Rail
All other Single modes S S S S S S 31.6
Multiple modes S S S S S S 20.9
Parcel, USPS or courier S S S S S S 20.9
All other multiple modes
Other and unknown modes S S S S S S S
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 17.7 35.1 23.5 46.4
Single modes 18.6 1.9 35.2 0.6 23.8 1.0 S
Truck 18.6 1.9 34.5 0.9 22.2 1.8 S
Rail S S S S S S 31.6
All other Single modes S S S S S S 31.6
Multiple modes 44.7 2.0 48.6 0.6 S S 23.3
Parcel, USPS or courier 44.7 2.0 48.6 0.6 S S 23.3
All other multiple modes
Other and unknown modes S S 48.2 S S S
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 28.9 S S S S 38.0
Single modes 35.8 12.9 S S S S S
Truck 48.8 14.6 S S S S 34.6
Rail S S S S S S 30.1
All other Single modes
Multiple modes S S S S S S 26.3
Parcel, USPS or courier S S S S S S 26.3
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.