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Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for CBSA of Origin: 2002

Monday, July 2, 2012

Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size 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 modes

Shipment Weight 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 shipment sizes 6.1 – 19.9 – 11.6 – 17.4
Less than 50 lbs 16.6 1.9 10.3 – 21.7 – 15.5
50 to 99 lbs 18.0 0.5 20.6 – 13.2 – 24.7
100 to 499 lbs 8.4 0.7 9.0 0.1 10.8 0.1 16.5
500 to 749 lbs 14.4 0.2 9.8 – 13.1 – 16.2
750 to 999 lbs 24.0 0.5 16.8 – 11.4 – 14.7
1,000 to 9,999 lbs 6.7 1.4 17.3 1.6 24.5 2.7 12.5
10,000 to 49,999 lbs 12.9 2.9 30.2 4.7 10.9 2.9 23.8
50,000 to 99,999 lbs 16.3 0.7 19.9 1.9 13.4 0.7 15.6
100,000 lbs or more 18.4 0.5 18.8 5.2 19.9 4.6 13.0

Single modes

Shipment Weight 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 shipment sizes 7.4 – 20.3 – 12.4 – 22.2
Less than 50 lbs S S 25.8 – 15.5 – S
50 to 99 lbs 15.9 0.2 27.2 – 24.6 – 40.6
100 to 499 lbs 10.2 0.7 10.9 0.1 12.0 0.1 20.0
500 to 749 lbs 15.6 0.2 10.0 – 13.5 – 16.7
750 to 999 lbs 25.8 0.5 17.4 – 13.9 – 18.7
1,000 to 9,999 lbs 10.3 2.0 18.1 1.7 28.3 2.9 11.5
10,000 to 49,999 lbs 12.9 3.7 30.7 5.2 12.1 3.8 25.4
50,000 to 99,999 lbs 16.9 0.9 20.1 1.9 13.7 0.9 17.7
100,000 lbs or more 18.6 0.6 20.4 5.5 21.9 5.1 13.6

Truck

Shipment Weight 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 shipment sizes 8.2 – 25.3 – 9.5 – 23.1
Less than 50 lbs S S 26.2 – 15.2 – S
50 to 99 lbs 12.8 0.1 27.5 – 25.5 – 39.3
100 to 499 lbs 10.8 0.7 10.9 0.2 12.3 0.1 20.6
500 to 749 lbs 15.6 0.3 10.0 0.1 13.6 – 17.0
750 to 999 lbs 25.9 0.5 17.5 0.1 14.2 – 19.1
1,000 to 9,999 lbs 10.7 2.4 18.2 2.3 28.8 4.0 11.6
10,000 to 49,999 lbs 13.4 3.9 30.8 3.8 12.4 4.7 25.4
50,000 to 99,999 lbs 20.5 0.8 21.1 2.5 16.3 1.4 11.2
100,000 lbs or more 43.3 0.2 34.1 2.5 49.0 3.9 49.0

Rail

Shipment Weight 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 shipment sizes 18.1 – 22.3 – 28.2 – 8.3
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs – – – – – – –
100 to 499 lbs S S S S S S 30.4
500 to 749 lbs S S S S S S 29.9
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs S S 47.4 0.1 49.7 0.3 26.6
10,000 to 49,999 lbs 34.8 3.9 48.6 0.6 34.8 1.0 18.9
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more 17.0 10.0 23.1 1.6 29.5 3.1 7.1

All other Single modes

Shipment Weight 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 shipment sizes 43.8 – 33.2 – 16.0 – 6.8
Less than 50 lbs S S 28.5 – 26.6 – 7.3
50 to 99 lbs S S S S 45.9 – 29.5
100 to 499 lbs S S 36.7 – 28.8 – 20.3
500 to 749 lbs S S S S S S 30.7
750 to 999 lbs S S S S S S 31.9
1,000 to 9,999 lbs 36.8 1.6 S S S S S
10,000 to 49,999 lbs S S S S S S S
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S 31.9 0.8 16.0 0.1 17.8

Multiple modes

Shipment Weight 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 shipment sizes 19.4 – 32.8 – 25.3 – 8.8
Less than 50 lbs 19.8 2.8 20.8 2.7 25.5 1.6 9.0
50 to 99 lbs 31.1 3.0 20.0 1.6 16.3 0.8 12.3
100 to 499 lbs 23.7 3.7 26.4 2.6 22.4 2.4 12.5
500 to 749 lbs 25.3 0.2 30.6 0.4 24.6 0.3 18.2
750 to 999 lbs 40.4 0.3 38.0 0.4 S S 23.4
1,000 to 9,999 lbs S S S S S S 22.0
10,000 to 49,999 lbs 17.1 2.5 31.2 6.3 35.8 8.3 5.7
50,000 to 99,999 lbs S S S S S S 28.0
100,000 lbs or more S S 50.0 12.1 S S 23.5

Parcel, USPS or courier

Shipment Weight 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 shipment sizes 15.4 – 16.7 – 17.2 – 8.9
Less than 50 lbs 19.8 5.2 20.8 5.7 25.5 7.1 9.0
50 to 99 lbs 31.1 3.3 20.0 2.8 16.3 3.4 12.4
100 to 499 lbs 23.8 3.7 26.9 3.8 23.5 5.1 12.4
500 to 749 lbs 25.1 0.2 32.7 0.9 25.9 1.0 19.4
750 to 999 lbs 39.3 0.3 39.7 1.6 S S 23.7
1,000 to 9,999 lbs – – – – – – –
10,000 to 49,999 lbs – – – – – – –
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more – – – – – – –

All other multiple modes

Shipment Weight 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 shipment sizes 37.3 – 36.2 – 27.4 – 12.2
Less than 50 lbs – – – – – – –
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs S S S S S S 32.9
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs S S S S S S 22.0
10,000 to 49,999 lbs 17.1 16.5 31.2 11.0 35.8 11.0 5.7
50,000 to 99,999 lbs S S S S S S 28.0
100,000 lbs or more S S 50.0 13.3 S S 23.5

Other and unknown modes

Shipment Weight 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 shipment sizes 32.8 – 26.2 – 32.0 – 38.2
Less than 50 lbs S S 49.2 0.1 S S 47.4
50 to 99 lbs 46.5 1.0 47.0 0.1 S S S
100 to 499 lbs 33.8 3.8 28.3 0.2 26.1 0.6 S
500 to 749 lbs S S S S S S S
750 to 999 lbs S S S S S S 26.5
1,000 to 9,999 lbs 46.1 13.3 S S 38.7 5.0 46.5
10,000 to 49,999 lbs 44.2 10.5 43.9 11.0 37.4 10.4 29.6
50,000 to 99,999 lbs S S S S S S 27.2
100,000 lbs or more 39.0 4.6 37.1 14.0 45.4 14.5 27.5

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.