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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 6.5 – 31.3 – 13.6 – 18.3
Less than 50 lbs 26.5 1.6 29.0 – 45.4 – 15.8
50 to 99 lbs 17.2 0.3 20.7 – 40.2 – 27.0
100 to 499 lbs 11.0 0.7 21.3 – 24.1 0.2 23.9
500 to 749 lbs 16.0 0.4 28.1 – 32.4 0.1 33.4
750 to 999 lbs 13.3 0.2 29.7 – 32.4 – 39.0
1,000 to 9,999 lbs 10.5 1.4 22.6 0.5 11.7 0.4 26.0
10,000 to 49,999 lbs 7.9 1.9 S S 11.8 3.3 S
50,000 to 99,999 lbs 14.4 1.0 33.3 4.8 21.2 2.2 30.5
100,000 lbs or more 17.3 3.4 22.1 8.7 20.6 4.9 15.6

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 6.6 – 33.8 – 14.3 – 35.8
Less than 50 lbs 20.3 0.7 26.7 – 48.3 – 25.1
50 to 99 lbs 18.9 0.2 21.0 – 23.3 – 46.6
100 to 499 lbs 12.0 0.6 24.7 – 20.8 0.1 27.4
500 to 749 lbs 17.6 0.5 31.8 – 17.6 – 48.5
750 to 999 lbs 12.4 0.2 30.2 – 25.3 – 34.3
1,000 to 9,999 lbs 10.6 1.8 22.4 0.6 13.0 0.5 27.0
10,000 to 49,999 lbs 7.9 1.8 S S 12.6 3.6 S
50,000 to 99,999 lbs 14.8 1.1 34.1 5.3 20.0 1.9 29.5
100,000 lbs or more 17.8 3.3 25.4 8.8 21.3 5.0 15.1

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 6.6 – S S 12.3 – 32.5
Less than 50 lbs 23.9 1.2 28.1 – 29.7 – 25.5
50 to 99 lbs 19.9 0.3 21.3 – 23.2 – 49.8
100 to 499 lbs 12.1 0.9 24.7 0.3 21.0 0.3 27.3
500 to 749 lbs 15.8 0.6 31.8 0.2 17.2 – 48.4
750 to 999 lbs 13.0 0.3 30.3 0.2 25.4 – 34.4
1,000 to 9,999 lbs 10.6 2.2 22.4 1.9 13.0 0.8 27.0
10,000 to 49,999 lbs 8.3 1.6 S S 12.9 3.9 S
50,000 to 99,999 lbs 15.3 1.5 34.3 7.0 20.8 3.4 31.0
100,000 lbs or more 39.9 2.8 38.6 4.2 43.6 2.9 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 20.0 – 28.0 – 32.4 – 10.5
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 S S S S S S 31.6
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs S S 48.9 – 45.7 – 25.8
10,000 to 49,999 lbs 21.2 1.7 18.0 1.0 19.6 2.9 14.1
50,000 to 99,999 lbs 32.1 0.6 32.8 0.7 33.9 0.8 24.2
100,000 lbs or more 21.4 1.7 28.5 1.6 33.9 3.0 11.6

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 14.6 – 35.0 – 29.2 – 8.2
Less than 50 lbs 15.3 0.5 S S S S 4.2
50 to 99 lbs S S S S 45.8 – 16.4
100 to 499 lbs 31.0 0.2 40.4 – 41.4 – 11.3
500 to 749 lbs S S S S S S 26.1
750 to 999 lbs S S S S S S S
1,000 to 9,999 lbs 45.4 – 37.7 – 48.8 – 26.1
10,000 to 49,999 lbs 40.9 0.3 37.8 – S S 31.0
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more 15.4 1.8 35.0 – 29.4 0.4 13.3

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 28.4 – 13.8 – 17.8 – 11.3
Less than 50 lbs 39.1 4.4 41.9 1.4 45.3 1.1 12.6
50 to 99 lbs 30.9 2.0 42.2 1.2 S S 18.9
100 to 499 lbs 24.2 3.7 44.6 3.4 43.4 2.6 17.1
500 to 749 lbs S S S S S S 21.5
750 to 999 lbs S S S S S S 26.9
1,000 to 9,999 lbs 36.0 0.4 35.7 0.6 47.4 1.2 34.3
10,000 to 49,999 lbs 23.7 2.0 35.9 7.8 34.0 8.0 9.3
50,000 to 99,999 lbs S S S S S S 22.9
100,000 lbs or more 30.8 2.0 27.1 9.5 26.3 9.8 15.4

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 32.2 – 44.4 – 48.9 – 11.6
Less than 50 lbs 39.1 4.6 41.9 4.9 45.3 6.2 12.6
50 to 99 lbs 30.9 2.2 42.2 2.3 S S 18.9
100 to 499 lbs 24.2 4.4 44.7 5.4 43.4 6.9 17.2
500 to 749 lbs S S S S S S 21.1
750 to 999 lbs S S S S S S 29.5
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 20.5 – 17.3 – 20.4 – 8.3
Less than 50 lbs – – – – – – –
50 to 99 lbs – – – – – – –
100 to 499 lbs S S S S S S 26.7
500 to 749 lbs S S S S S S 28.9
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs 41.0 1.9 42.4 0.8 47.9 1.7 13.7
10,000 to 49,999 lbs 23.7 7.6 35.9 10.3 34.0 10.7 9.3
50,000 to 99,999 lbs S S S S S S 22.9
100,000 lbs or more 30.8 8.2 27.1 10.2 26.3 10.0 15.4

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 15.1 – 33.3 – 26.9 – S
Less than 50 lbs S S 39.2 0.5 38.3 – S
50 to 99 lbs 34.5 1.8 29.2 0.4 S S 43.8
100 to 499 lbs 20.7 1.3 27.5 0.5 35.2 – S
500 to 749 lbs S S S S S S 29.0
750 to 999 lbs S S 40.2 0.1 S S S
1,000 to 9,999 lbs 23.7 3.0 44.0 2.3 48.1 3.8 S
10,000 to 49,999 lbs 34.6 6.8 25.7 5.2 25.9 6.6 S
50,000 to 99,999 lbs 48.6 2.4 29.1 12.1 45.4 11.1 27.4
100,000 lbs or more 29.8 7.8 40.4 17.1 31.6 11.2 S

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.