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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 11.2 – 19.2 – S S 48.8
Less than 50 lbs 13.2 2.5 10.1 – 23.9 0.9 S
50 to 99 lbs 13.0 0.9 7.0 – 28.7 0.7 24.3
100 to 499 lbs 13.9 2.7 11.8 0.3 13.9 1.0 14.2
500 to 749 lbs 13.8 0.8 14.6 0.1 36.3 0.6 40.7
750 to 999 lbs 21.2 0.6 23.2 0.1 33.1 0.4 31.7
1,000 to 9,999 lbs 13.5 1.3 13.4 0.9 33.2 6.2 22.6
10,000 to 49,999 lbs 26.3 4.3 32.1 5.2 S S 33.1
50,000 to 99,999 lbs 28.6 0.4 16.5 2.3 21.5 1.1 12.8
100,000 lbs or more 23.1 3.4 19.8 7.6 30.7 11.7 18.6

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 14.5 – 16.5 – 27.9 – 20.7
Less than 50 lbs 17.2 2.2 8.8 – 17.4 0.2 36.9
50 to 99 lbs 18.2 0.8 8.2 – 39.0 0.8 44.4
100 to 499 lbs 12.1 2.7 13.2 0.3 19.6 0.7 21.2
500 to 749 lbs 13.1 0.7 15.9 0.1 S S S
750 to 999 lbs 14.8 0.4 18.8 – 49.1 0.2 S
1,000 to 9,999 lbs 14.9 1.5 14.6 0.8 S S S
10,000 to 49,999 lbs 29.3 4.8 23.5 5.2 23.7 4.6 S
50,000 to 99,999 lbs 29.4 0.6 17.3 2.4 22.7 2.1 11.0
100,000 lbs or more 22.2 3.7 19.2 8.1 49.3 8.9 26.0

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 14.5 – 19.4 – 12.2 – 6.3
Less than 50 lbs 18.1 3.9 9.2 0.2 12.4 0.2 7.8
50 to 99 lbs 15.7 1.1 8.8 0.2 11.8 0.2 7.6
100 to 499 lbs 12.1 2.5 13.8 1.2 13.7 0.9 8.0
500 to 749 lbs 15.2 0.8 17.9 0.3 16.7 0.5 6.7
750 to 999 lbs 16.8 0.4 20.3 0.5 23.4 0.5 9.1
1,000 to 9,999 lbs 15.7 3.0 16.7 2.8 16.9 2.6 12.3
10,000 to 49,999 lbs 33.5 6.2 25.6 5.3 14.0 4.9 20.2
50,000 to 99,999 lbs 29.4 0.7 17.4 2.2 23.0 2.5 11.1
100,000 lbs or more S S S S S S 22.2

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 27.1 – 20.2 – 35.6 – 19.9
Less than 50 lbs 47.8 6.0 16.6 2.0 20.5 1.9 23.5
50 to 99 lbs 35.2 1.7 18.5 0.7 44.3 3.4 S
100 to 499 lbs 34.9 5.4 21.8 2.7 28.4 3.7 27.7
500 to 749 lbs 34.6 1.4 36.2 2.1 S S 21.5
750 to 999 lbs 45.2 0.3 41.7 1.2 S S S
1,000 to 9,999 lbs 42.6 4.8 36.0 7.9 S S 16.9
10,000 to 49,999 lbs S S S S 49.6 5.1 21.5
50,000 to 99,999 lbs S S S S S S 29.8
100,000 lbs or more 22.3 9.7 20.4 14.3 49.3 10.9 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 15.2 – 49.2 – S S 21.0
Less than 50 lbs 17.2 5.8 18.9 0.5 28.3 1.6 18.9
50 to 99 lbs 25.8 1.2 20.4 0.3 25.6 0.8 16.4
100 to 499 lbs 35.0 4.0 16.7 1.5 16.9 1.3 23.3
500 to 749 lbs 32.0 1.7 26.0 0.7 34.2 0.6 28.4
750 to 999 lbs S S 48.1 1.2 S S 17.7
1,000 to 9,999 lbs 22.3 1.9 28.3 5.2 37.0 6.2 11.3
10,000 to 49,999 lbs 34.9 3.6 S S S S 25.3
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 39.1 6.9 40.3 12.3 38.3 13.9 30.6

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 31.9 – 21.0 – 26.5 – 17.4
Less than 50 lbs 20.6 10.6 26.2 4.9 34.4 10.4 17.2
50 to 99 lbs 29.7 5.2 20.1 2.9 34.9 6.4 20.0
100 to 499 lbs 45.9 7.2 21.4 4.1 43.5 7.5 36.7
500 to 749 lbs S S 36.3 4.6 S S 34.7
750 to 999 lbs S S 47.8 3.2 S S S
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 16.1 – 49.6 – S S 33.3
Less than 50 lbs 19.9 3.1 16.2 0.2 25.0 0.4 20.9
50 to 99 lbs 19.9 0.8 27.8 0.2 25.0 0.2 S
100 to 499 lbs 16.9 2.3 23.7 1.0 22.5 0.9 15.6
500 to 749 lbs 24.6 1.6 34.0 0.7 35.5 0.7 13.3
750 to 999 lbs 38.6 1.2 S S S S 23.2
1,000 to 9,999 lbs 22.3 5.2 28.3 5.5 37.0 6.6 11.3
10,000 to 49,999 lbs 34.9 5.0 S S S S 25.3
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 39.1 8.7 40.3 12.4 38.3 14.2 30.6

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 23.0 – 40.4 – 37.8 – S
Less than 50 lbs 25.9 6.8 47.3 2.4 29.3 2.9 S
50 to 99 lbs 41.6 4.0 20.9 1.5 S S S
100 to 499 lbs 18.3 3.5 29.6 6.2 36.5 12.9 S
500 to 749 lbs 24.6 1.0 S S S S S
750 to 999 lbs 43.9 0.7 46.0 0.2 S S 34.7
1,000 to 9,999 lbs 37.3 3.6 31.8 6.4 S S S
10,000 to 49,999 lbs 47.2 7.0 32.0 10.8 S S 32.4
50,000 to 99,999 lbs S S 47.9 4.6 S S 28.6
100,000 lbs or more S S S S S S 29.8

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.