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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 8.5 – 32.7 – 11.7 – 6.5
Less than 50 lbs 24.0 4.5 19.5 0.1 16.0 0.9 8.0
50 to 99 lbs 27.6 3.5 17.0 – 18.1 0.7 20.1
100 to 499 lbs 22.7 3.1 12.8 0.4 17.6 1.4 16.3
500 to 749 lbs 35.6 1.5 12.8 0.1 26.2 0.6 20.6
750 to 999 lbs 23.7 0.4 13.7 0.1 22.7 0.4 18.6
1,000 to 9,999 lbs 16.1 3.3 14.6 1.1 21.5 2.7 10.5
10,000 to 49,999 lbs 19.5 2.4 36.6 7.0 15.8 4.1 S
50,000 to 99,999 lbs 36.9 1.7 40.9 5.4 31.6 3.6 34.9
100,000 lbs or more S S S S S S S

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 10.4 – 32.2 – 13.9 – 14.8
Less than 50 lbs 26.4 2.2 26.7 – 18.4 0.2 26.1
50 to 99 lbs 42.0 3.9 25.0 – 27.0 0.2 39.7
100 to 499 lbs 20.8 2.4 16.9 0.3 21.8 1.2 20.8
500 to 749 lbs 30.0 2.1 14.9 0.1 24.0 0.5 17.6
750 to 999 lbs 20.3 0.8 13.4 0.1 27.1 0.4 22.3
1,000 to 9,999 lbs 16.6 3.7 15.2 1.0 25.9 2.9 14.3
10,000 to 49,999 lbs 19.5 3.1 36.6 7.0 17.2 5.0 S
50,000 to 99,999 lbs 37.1 2.1 38.5 5.4 31.6 3.8 33.4
100,000 lbs or more S S S S S S S

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 9.2 – 32.3 – 15.2 – 20.6
Less than 50 lbs 21.0 1.8 29.7 – 36.9 0.2 37.4
50 to 99 lbs 48.3 4.3 26.4 – 32.3 0.2 45.5
100 to 499 lbs 25.0 3.2 16.9 0.3 22.6 1.6 22.7
500 to 749 lbs 34.7 2.4 15.6 0.1 26.1 0.6 18.4
750 to 999 lbs 23.8 1.0 13.9 0.1 27.8 0.5 21.3
1,000 to 9,999 lbs 18.5 4.1 15.2 1.0 26.2 2.8 14.1
10,000 to 49,999 lbs 19.9 3.8 36.7 7.1 18.6 5.2 S
50,000 to 99,999 lbs 37.1 2.4 38.5 5.5 31.6 4.2 33.4
100,000 lbs or more S S S S S S 33.1

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 – – – – – – –
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 – – – – – – –
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more – – – – – – –

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 31.3 – 32.4 – 39.0 – 8.6
Less than 50 lbs S S 20.3 4.9 17.3 5.4 10.4
50 to 99 lbs 44.0 2.1 35.2 2.2 32.6 2.4 15.6
100 to 499 lbs 31.6 9.8 29.5 7.5 41.3 8.0 12.7
500 to 749 lbs 42.9 2.2 39.3 2.7 42.1 3.6 43.1
750 to 999 lbs S S S S 47.3 0.8 S
1,000 to 9,999 lbs 46.1 5.6 40.8 10.8 46.6 12.9 19.7
10,000 to 49,999 lbs S S S S S S 31.5
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 21.5 – 15.0 – 18.7 – 4.2
Less than 50 lbs 32.5 7.2 18.4 4.1 17.9 5.5 4.2
50 to 99 lbs 30.8 4.7 20.1 2.8 22.6 3.6 14.4
100 to 499 lbs S S 26.9 5.4 30.6 5.5 8.8
500 to 749 lbs S S 45.9 1.6 S S 21.0
750 to 999 lbs S S S S S S 27.3
1,000 to 9,999 lbs S S S S S S 32.3
10,000 to 49,999 lbs – – – – – – –
50,000 to 99,999 lbs – – – – – – –
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 21.6 – 14.4 – 18.4 – 4.3
Less than 50 lbs 32.5 7.2 18.5 4.1 17.9 5.8 4.2
50 to 99 lbs 30.9 4.7 20.1 2.8 22.5 3.6 14.4
100 to 499 lbs S S 27.0 5.4 30.7 5.5 8.8
500 to 749 lbs S S S S S S 22.9
750 to 999 lbs S S S S S S 31.5
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 48.1 – 15.9
Less than 50 lbs S S 44.6 18.2 43.8 18.2 26.0
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs S S S S S S 28.6
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs S S S S S S 32.3
10,000 to 49,999 lbs – – – – – – –
50,000 to 99,999 lbs – – – – – – –
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 23.2 – S S S S S
Less than 50 lbs 34.2 8.6 48.2 5.9 S S S
50 to 99 lbs S S 48.4 5.8 S S S
100 to 499 lbs S S 36.2 3.9 S S S
500 to 749 lbs 47.7 0.6 S S S S 44.3
750 to 999 lbs S S S S S S 30.5
1,000 to 9,999 lbs 31.5 11.4 48.4 11.4 46.5 12.7 S
10,000 to 49,999 lbs S S S S S S 30.9
50,000 to 99,999 lbs S S S S S S 30.3
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.