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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 7.4 – 12.2 – 21.1 – 17.1
Less than 50 lbs 14.2 1.9 19.2 0.2 32.3 1.0 13.1
50 to 99 lbs 16.9 1.0 30.1 0.2 23.0 0.3 35.4
100 to 499 lbs 19.3 2.3 28.4 0.6 14.7 0.6 44.6
500 to 749 lbs 26.4 1.8 S S 27.7 0.4 S
750 to 999 lbs 47.0 1.9 45.3 0.4 29.1 0.2 S
1,000 to 9,999 lbs 24.3 3.6 20.7 1.9 22.9 1.8 37.7
10,000 to 49,999 lbs 7.3 1.9 13.1 5.0 26.3 7.5 22.1
50,000 to 99,999 lbs 43.5 0.8 22.4 1.9 S S 28.5
100,000 lbs or more 25.8 1.5 38.5 7.0 34.4 10.4 34.4

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 10.1 – 12.6 – 21.8 – 45.3
Less than 50 lbs 13.2 0.5 27.5 – 17.4 – S
50 to 99 lbs 22.4 0.8 41.3 0.2 34.8 – S
100 to 499 lbs 26.6 2.5 33.3 0.6 12.5 0.4 S
500 to 749 lbs 25.1 0.6 S S 25.5 0.3 S
750 to 999 lbs 48.6 2.1 46.3 0.4 29.5 0.2 S
1,000 to 9,999 lbs 25.5 4.0 20.9 2.0 23.6 1.9 42.5
10,000 to 49,999 lbs 7.2 4.1 13.7 5.3 27.6 8.3 21.4
50,000 to 99,999 lbs 44.8 1.2 22.7 2.0 S S 30.7
100,000 lbs or more 25.8 1.6 38.5 7.1 34.4 10.7 34.4

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 10.5 – 14.3 – 26.4 – 48.8
Less than 50 lbs 19.8 0.7 30.2 – 32.9 – S
50 to 99 lbs 29.6 0.8 42.1 0.2 41.5 – S
100 to 499 lbs 26.9 2.6 33.4 0.7 12.4 0.5 S
500 to 749 lbs 25.7 0.7 S S 24.0 0.4 S
750 to 999 lbs 48.7 2.5 46.3 0.5 29.5 0.4 S
1,000 to 9,999 lbs 25.6 4.3 21.0 2.7 24.4 1.9 43.8
10,000 to 49,999 lbs 7.3 4.3 13.7 2.9 28.2 1.8 22.1
50,000 to 99,999 lbs 45.4 1.2 23.4 1.9 S S 28.7
100,000 lbs or more S S S S S S 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 36.3 – S S S S 36.4
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 S S S S S S 31.6
10,000 to 49,999 lbs 28.8 12.1 26.9 10.8 35.0 12.1 20.1
50,000 to 99,999 lbs 47.4 1.8 47.6 1.5 48.2 1.0 26.5
100,000 lbs or more 38.1 11.8 S S S S 28.7

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 32.0 – 48.3 – 48.0 – 8.9
Less than 50 lbs 28.9 12.3 27.8 12.9 28.7 12.9 9.5
50 to 99 lbs S S S S S S 11.6
100 to 499 lbs 38.8 5.9 S S S S 19.4
500 to 749 lbs S S S S S S 31.2
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs 45.6 1.3 S S S S 23.9
10,000 to 49,999 lbs S S S S S S 30.5
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 48.6 9.9 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 22.7 – 19.8 – 16.8 – 4.9
Less than 50 lbs 21.0 6.2 29.0 5.7 35.6 7.1 5.8
50 to 99 lbs 28.3 2.0 25.7 1.7 26.9 2.0 8.6
100 to 499 lbs 29.1 4.2 36.0 5.9 32.0 5.8 12.6
500 to 749 lbs S S S S S S 33.8
750 to 999 lbs 48.6 0.1 37.8 0.8 39.5 0.4 24.3
1,000 to 9,999 lbs S S S S S S 30.7
10,000 to 49,999 lbs 46.3 2.1 39.1 7.7 48.5 9.3 23.5
50,000 to 99,999 lbs S S S S S S 30.7
100,000 lbs or more – – – – – – –

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 23.0 – 25.4 – 23.9 – 4.9
Less than 50 lbs 21.0 6.3 29.0 6.2 35.6 7.1 5.8
50 to 99 lbs 28.3 2.0 25.7 1.2 26.9 1.2 8.6
100 to 499 lbs 29.1 4.4 36.0 5.5 32.0 6.3 12.6
500 to 749 lbs S S S S S S 33.8
750 to 999 lbs 48.6 0.1 37.8 0.9 39.5 0.4 24.3
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 43.1 – 36.1 – 42.2 – 23.3
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 S S S S S S 31.6
10,000 to 49,999 lbs 46.3 5.3 39.1 4.9 48.5 6.3 23.5
50,000 to 99,999 lbs S S S S S S 30.7
100,000 lbs or more – – – – – – –

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 29.8 – 32.8 – S S S
Less than 50 lbs S S S S S S S
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 49.3 1.2 49.0 0.9 S S 29.5
750 to 999 lbs S S S S S S S
1,000 to 9,999 lbs 37.0 13.1 24.0 10.5 36.4 16.6 33.9
10,000 to 49,999 lbs 39.3 9.7 46.7 13.3 S S 28.2
50,000 to 99,999 lbs S S S S S S 32.7
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.