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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 4.2 – 7.6 – 8.6 – 10.4
Less than 50 lbs 18.6 1.7 14.7 – 18.7 – 9.8
50 to 99 lbs 14.3 0.4 11.1 – 15.7 – 11.6
100 to 499 lbs 15.1 0.7 7.7 – 9.5 – 12.8
500 to 749 lbs 15.8 0.2 16.6 – 15.3 – 17.2
750 to 999 lbs 13.5 0.2 14.4 – 16.1 – 14.1
1,000 to 9,999 lbs 7.6 1.5 7.6 0.5 10.4 0.5 13.4
10,000 to 49,999 lbs 6.5 1.9 11.8 3.7 6.8 2.7 16.6
50,000 to 99,999 lbs 21.7 0.8 18.2 3.2 25.3 1.5 11.5
100,000 lbs or more 14.9 0.6 16.0 4.8 14.2 4.0 25.3

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 4.6 – 7.8 – 8.7 – 11.7
Less than 50 lbs 23.9 0.7 21.5 – 22.4 – 18.6
50 to 99 lbs 26.2 0.5 12.0 – 9.7 – 10.9
100 to 499 lbs 17.3 0.8 9.2 – 10.6 – 12.5
500 to 749 lbs 16.5 0.3 17.2 – 15.0 – 15.3
750 to 999 lbs 14.6 0.2 14.7 – 16.0 – 13.4
1,000 to 9,999 lbs 7.0 1.6 7.5 0.4 10.4 0.5 13.4
10,000 to 49,999 lbs 6.7 1.8 12.2 3.8 6.8 2.8 18.7
50,000 to 99,999 lbs 20.8 0.8 18.2 3.3 25.0 1.5 11.3
100,000 lbs or more 15.3 0.6 16.2 4.8 14.3 4.1 25.3

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 5.5 – 11.5 – 8.2 – 11.9
Less than 50 lbs 23.5 0.4 22.7 – 28.3 – 19.7
50 to 99 lbs 27.8 0.3 13.3 – 11.0 – 10.8
100 to 499 lbs 16.9 0.8 9.2 – 10.5 0.1 12.9
500 to 749 lbs 17.1 0.3 17.3 – 15.2 0.1 15.2
750 to 999 lbs 15.6 0.2 14.6 – 15.8 – 13.2
1,000 to 9,999 lbs 7.0 1.7 7.5 0.6 10.5 1.0 13.5
10,000 to 49,999 lbs 6.7 1.6 12.2 6.1 6.7 2.7 18.7
50,000 to 99,999 lbs 23.5 0.9 18.2 4.1 25.9 2.5 11.8
100,000 lbs or more 38.4 0.5 43.0 5.9 24.4 1.0 S

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 11.7 – 14.6 – 14.6 – 7.0
Less than 50 lbs – – – – – – –
50 to 99 lbs – – – – – – –
100 to 499 lbs – – – – – – –
500 to 749 lbs – – – – – – –
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs – – – – – – –
10,000 to 49,999 lbs 39.5 0.8 43.4 – 46.2 0.3 26.4
50,000 to 99,999 lbs 49.2 4.7 44.4 0.4 35.7 0.3 25.3
100,000 lbs or more 14.5 4.9 14.8 0.4 14.8 0.6 9.4

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 38.3 – S S S S 13.7
Less than 50 lbs S S 48.9 6.8 43.5 8.6 18.8
50 to 99 lbs S S S S 35.6 6.1 35.0
100 to 499 lbs S S 42.2 6.6 S S 16.7
500 to 749 lbs S S S S S S 26.6
750 to 999 lbs S S 49.4 2.0 S S 27.8
1,000 to 9,999 lbs S S S S S S 24.3
10,000 to 49,999 lbs S S S S S S 31.6
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S S S S S 31.6

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 19.9 – 39.4 – 13.2 – 4.8
Less than 50 lbs 23.3 8.7 18.8 11.8 20.2 8.2 4.8
50 to 99 lbs 19.6 4.8 24.9 2.2 23.6 1.3 12.1
100 to 499 lbs 37.0 1.5 23.8 1.6 28.7 1.4 14.4
500 to 749 lbs S S 48.1 0.7 S S 25.5
750 to 999 lbs S S S S S S S
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs 37.6 0.5 26.5 5.1 21.7 8.4 27.7
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more S S S S S S 29.9

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 20.5 – 16.4 – 17.3 – 4.8
Less than 50 lbs 23.3 8.6 18.8 7.7 20.2 7.9 4.8
50 to 99 lbs 19.6 5.4 24.9 3.1 23.6 4.6 12.2
100 to 499 lbs 37.0 1.6 23.8 2.5 28.7 3.1 14.4
500 to 749 lbs S S 48.1 3.2 S S 25.5
750 to 999 lbs S S S S S S S
1,000 to 9,999 lbs S S S S S S 31.6
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 38.9 – S S 26.3 – S
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs – – – – – – –
500 to 749 lbs – – – – – – –
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs S S S S S S 31.6
10,000 to 49,999 lbs 37.6 13.0 S S 21.7 14.0 27.7
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more S S S S S S 29.9

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 32.0 – S S 39.5 – S
Less than 50 lbs S S 35.9 0.6 S S S
50 to 99 lbs 49.7 1.1 35.5 0.4 S S S
100 to 499 lbs 41.9 7.7 30.5 5.2 S S S
500 to 749 lbs 44.9 0.9 37.5 1.5 S S 35.6
750 to 999 lbs S S S S S S 39.2
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs 35.4 7.9 S S 41.0 8.9 S
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S S S S S 35.2

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.