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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 5.8 – 8.3 – 12.6 – 22.2
Less than 50 lbs 25.0 0.7 24.8 – 16.9 – 32.9
50 to 99 lbs 34.0 0.5 23.1 – 23.6 – 22.7
100 to 499 lbs 13.7 0.5 26.2 0.1 14.7 – 27.9
500 to 749 lbs 22.0 0.3 18.4 – 42.4 – 25.0
750 to 999 lbs 15.3 0.2 15.1 – 25.1 – 31.0
1,000 to 9,999 lbs 15.2 2.2 13.7 0.4 12.2 0.2 19.0
10,000 to 49,999 lbs 6.9 1.9 18.7 4.9 13.7 3.3 20.8
50,000 to 99,999 lbs 23.4 1.4 30.7 3.8 13.0 0.7 19.7
100,000 lbs or more 14.1 2.2 15.9 5.7 16.7 3.6 14.0

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 5.6 – 8.9 – 13.1 – 23.9
Less than 50 lbs 45.2 0.7 38.6 – 20.2 – S
50 to 99 lbs 43.1 0.4 30.0 – 24.3 – 18.6
100 to 499 lbs 15.0 0.5 29.9 0.1 13.0 – 27.9
500 to 749 lbs 25.5 0.3 21.9 – 44.0 – 24.3
750 to 999 lbs 14.7 0.1 15.6 – 26.3 – 32.3
1,000 to 9,999 lbs 15.0 2.3 13.8 0.4 12.2 0.2 18.2
10,000 to 49,999 lbs 7.2 2.2 19.0 4.9 13.9 3.2 20.6
50,000 to 99,999 lbs 23.6 1.6 30.9 4.1 13.2 0.7 19.7
100,000 lbs or more 14.7 2.7 16.6 5.9 17.3 3.5 14.0

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 5.8 – 13.2 – 12.3 – 22.9
Less than 50 lbs 47.3 0.8 38.9 – 24.1 – S
50 to 99 lbs 44.3 0.5 30.1 – 26.2 – 17.2
100 to 499 lbs 15.3 0.5 30.0 0.1 13.0 – 27.6
500 to 749 lbs 25.3 0.4 21.9 – 44.7 0.2 24.8
750 to 999 lbs 14.8 0.2 15.6 – 26.4 – 32.4
1,000 to 9,999 lbs 14.7 2.8 13.8 0.7 12.4 0.6 18.3
10,000 to 49,999 lbs 7.2 2.7 19.0 5.5 13.8 2.0 20.5
50,000 to 99,999 lbs 24.3 1.8 31.2 4.9 15.1 1.6 19.7
100,000 lbs or more 26.2 1.0 40.9 4.8 13.3 0.5 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 12.9 – 24.9 – 15.5 – 4.5
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 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 21.9
10,000 to 49,999 lbs 45.1 0.6 47.9 0.1 49.3 0.3 19.8
50,000 to 99,999 lbs 25.0 0.4 42.5 0.2 29.7 0.2 12.5
100,000 lbs or more 12.7 0.6 24.9 0.3 15.6 0.4 4.6

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 22.3 – 22.2 – 24.9 – 10.2
Less than 50 lbs 34.3 0.5 S S S S 4.8
50 to 99 lbs 46.9 – 30.3 – 37.5 – 22.1
100 to 499 lbs 40.0 0.3 32.5 – 32.7 – 8.8
500 to 749 lbs S S S S S S 18.9
750 to 999 lbs S S S S S S 28.1
1,000 to 9,999 lbs S S 40.9 – S S 30.2
10,000 to 49,999 lbs S S 41.4 – S S 38.6
50,000 to 99,999 lbs 48.7 – 48.6 – S S 42.4
100,000 lbs or more 23.0 1.2 22.2 – 24.9 – 29.9

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 14.5 – 33.4 – 38.9 – 16.8
Less than 50 lbs 22.7 5.0 19.8 3.4 21.8 3.7 19.1
50 to 99 lbs 27.9 2.3 27.1 2.6 34.6 2.1 13.0
100 to 499 lbs 25.3 3.7 30.5 4.6 41.9 4.3 12.1
500 to 749 lbs 39.1 0.2 43.6 0.8 39.4 – S
750 to 999 lbs 49.0 0.4 S S 42.7 0.4 46.8
1,000 to 9,999 lbs 49.9 0.6 S S S S S
10,000 to 49,999 lbs 29.5 1.8 40.8 3.8 48.1 9.0 9.3
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 31.5 4.2 38.5 14.3 47.5 16.5 32.3

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 16.5 – 22.2 – 28.9 – 16.5
Less than 50 lbs 22.7 5.3 19.9 6.5 21.8 7.0 19.1
50 to 99 lbs 27.9 2.6 28.2 2.2 34.7 1.9 11.7
100 to 499 lbs 25.8 4.3 34.5 6.5 42.0 6.1 14.1
500 to 749 lbs 39.2 0.2 49.4 1.3 39.8 0.6 S
750 to 999 lbs S S S S 44.6 2.8 46.1
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 16.3 – 35.6 – 41.2 – S
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs S S S S S S S
100 to 499 lbs S S S S S S S
500 to 749 lbs S S S S S S S
750 to 999 lbs S S S S S S 31.5
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs 29.5 12.3 40.8 14.4 48.1 16.5 9.3
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 31.5 11.8 38.5 14.5 47.5 16.3 32.3

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 46.1 – 34.1 – 27.3 – S
Less than 50 lbs 42.0 9.0 49.9 0.1 S S 47.4
50 to 99 lbs S S 48.3 0.2 46.2 – S
100 to 499 lbs 27.2 2.9 42.9 2.8 38.5 0.6 S
500 to 749 lbs S S 43.0 2.8 S S S
750 to 999 lbs S S S S 47.6 0.3 37.6
1,000 to 9,999 lbs 26.2 9.0 S S 46.5 6.0 S
10,000 to 49,999 lbs S S 46.6 10.1 45.1 10.4 S
50,000 to 99,999 lbs S S S S S S 37.6
100,000 lbs or more S S 35.9 16.8 36.9 11.0 21.2

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.