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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 6.2 – 14.6 – 10.8 – 15.2
Less than 50 lbs 18.2 3.4 20.4 – 30.9 0.3 14.2
50 to 99 lbs 16.1 0.7 17.7 – 15.0 – 23.3
100 to 499 lbs 16.2 1.3 22.8 0.3 14.6 0.3 22.3
500 to 749 lbs 15.8 0.3 19.0 0.1 42.7 0.4 26.2
750 to 999 lbs 30.0 0.4 27.0 0.1 44.2 0.2 38.4
1,000 to 9,999 lbs 11.5 1.7 16.2 1.5 13.6 2.0 26.7
10,000 to 49,999 lbs 13.5 3.0 20.3 3.0 16.4 6.6 14.2
50,000 to 99,999 lbs 36.3 3.9 25.1 4.4 18.8 1.4 23.6
100,000 lbs or more 27.2 0.8 22.5 3.8 36.6 7.8 13.3

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 8.1 – 14.8 – 11.0 – 13.2
Less than 50 lbs 22.1 0.9 26.2 – 25.6 – 30.9
50 to 99 lbs 20.5 0.9 24.6 – 25.8 – 15.3
100 to 499 lbs 16.9 1.6 26.7 0.3 15.6 0.2 27.2
500 to 749 lbs 16.8 0.4 23.3 0.1 42.1 0.3 20.9
750 to 999 lbs 37.2 0.5 33.9 0.1 20.0 – S
1,000 to 9,999 lbs 12.2 2.1 18.3 1.6 14.2 1.9 31.4
10,000 to 49,999 lbs 13.4 3.4 20.4 2.9 16.3 7.0 14.7
50,000 to 99,999 lbs 35.9 4.1 24.8 4.4 18.8 1.4 23.6
100,000 lbs or more 27.6 1.2 22.4 3.7 36.6 8.0 13.3

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 8.5 – 17.3 – 13.4 – 10.9
Less than 50 lbs 25.3 1.0 26.4 – 30.7 – 16.2
50 to 99 lbs 22.5 0.9 24.6 – 27.0 – 16.8
100 to 499 lbs 18.6 1.7 26.9 0.4 15.9 0.2 26.8
500 to 749 lbs 17.2 0.4 23.3 0.1 42.2 0.5 21.0
750 to 999 lbs 40.2 0.6 33.9 0.2 20.2 0.1 S
1,000 to 9,999 lbs 11.9 2.3 18.6 2.0 13.4 2.9 31.5
10,000 to 49,999 lbs 13.6 3.6 20.5 3.3 16.7 3.3 13.1
50,000 to 99,999 lbs 36.0 4.2 24.9 4.2 19.1 2.0 23.2
100,000 lbs or more 45.0 0.1 34.7 0.7 S S 31.8

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 23.8 – 23.1 – 46.2 – 18.3
Less than 50 lbs S S S S S S 31.6
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 S S S S S S 31.6
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 24.2 5.2 23.5 1.7 46.4 0.5 17.2

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 23.3 – 41.5 – S S 3.9
Less than 50 lbs 38.6 9.5 27.4 8.1 32.0 8.9 8.7
50 to 99 lbs S S S S S S 10.8
100 to 499 lbs 41.2 8.8 S S 37.0 10.5 12.6
500 to 749 lbs S S 49.8 0.8 41.1 0.9 28.5
750 to 999 lbs S S S S S S 28.0
1,000 to 9,999 lbs S S S S S S 28.2
10,000 to 49,999 lbs S S S S S S 30.0
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 45.1 9.2 S S S S S

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 15.7 – S S 29.1 – 10.3
Less than 50 lbs 19.8 5.4 29.7 12.5 32.5 10.1 10.4
50 to 99 lbs 25.4 1.7 23.8 3.9 27.8 2.5 17.7
100 to 499 lbs 39.5 3.9 27.6 8.1 25.7 8.6 28.2
500 to 749 lbs S S S S S S 28.1
750 to 999 lbs S S S S S S 24.6
1,000 to 9,999 lbs S S S S S S 31.6
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

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 16.1 – 28.5 – 32.6 – 10.3
Less than 50 lbs 19.8 4.9 29.7 9.1 32.5 10.1 10.4
50 to 99 lbs 25.4 1.8 23.8 3.4 27.8 2.9 17.7
100 to 499 lbs 22.3 3.0 28.7 6.3 30.4 7.8 16.9
500 to 749 lbs S S S S S S 28.1
750 to 999 lbs S S S S S S 24.6
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 S S S S S S 29.8
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 31.6
500 to 749 lbs – – – – – – –
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs S S S S S S 31.6
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

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 29.7 – 32.4 – 37.3 – S
Less than 50 lbs 43.6 3.0 S S S S S
50 to 99 lbs 33.7 0.5 27.7 0.4 S S S
100 to 499 lbs 45.1 5.7 41.4 5.4 38.6 1.7 S
500 to 749 lbs 40.0 1.5 49.2 1.2 S S 44.7
750 to 999 lbs 45.6 0.4 46.0 1.2 S S 45.3
1,000 to 9,999 lbs 41.6 8.2 49.6 9.1 49.9 12.3 26.9
10,000 to 49,999 lbs 46.9 7.2 33.4 9.4 48.1 12.9 36.4
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more – – – – – – –

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.