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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 13.0 – 19.6 – 20.6 – 18.4
Less than 50 lbs 18.4 3.0 17.3 0.2 23.0 0.7 20.7
50 to 99 lbs 36.3 1.3 24.9 – 27.7 0.2 24.5
100 to 499 lbs 20.5 1.5 33.0 0.5 13.0 0.3 38.5
500 to 749 lbs 30.9 0.7 32.4 0.2 44.6 0.6 S
750 to 999 lbs 22.2 0.2 26.8 0.1 29.9 – 20.1
1,000 to 9,999 lbs 31.5 4.8 28.0 4.3 49.9 7.0 16.3
10,000 to 49,999 lbs 14.1 4.6 29.0 6.5 27.7 7.2 15.5
50,000 to 99,999 lbs 27.3 0.5 33.2 5.4 38.6 1.1 38.3
100,000 lbs or more 31.5 0.1 44.5 1.6 47.4 4.0 9.7

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 15.0 – 24.1 – 23.8 – 27.8
Less than 50 lbs 38.8 2.0 37.2 0.1 33.3 – 48.0
50 to 99 lbs 32.3 0.7 29.5 – 22.7 – 47.0
100 to 499 lbs 18.5 1.6 29.7 0.7 15.7 0.3 37.1
500 to 749 lbs 31.3 0.9 32.6 0.4 19.9 0.2 44.4
750 to 999 lbs 24.7 0.2 29.7 0.2 19.6 0.1 19.2
1,000 to 9,999 lbs 28.1 3.2 25.3 2.5 19.6 2.3 18.9
10,000 to 49,999 lbs 15.6 4.0 29.6 4.4 29.1 4.6 16.5
50,000 to 99,999 lbs 27.4 0.7 32.0 2.6 48.1 0.9 25.2
100,000 lbs or more 23.3 0.1 38.4 2.2 40.8 5.2 17.4

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 15.6 – 24.6 – 27.3 – 29.2
Less than 50 lbs 40.5 2.0 37.4 0.1 35.3 – 30.7
50 to 99 lbs 32.4 0.7 29.5 0.1 22.9 – 47.8
100 to 499 lbs 18.8 1.6 29.8 0.8 15.9 0.3 38.3
500 to 749 lbs 36.1 0.8 32.6 0.4 20.3 0.2 43.4
750 to 999 lbs 24.7 0.2 29.7 0.2 19.6 0.1 19.2
1,000 to 9,999 lbs 28.4 3.3 27.4 2.4 20.1 2.2 18.4
10,000 to 49,999 lbs 15.7 4.0 29.6 4.3 29.8 2.9 15.4
50,000 to 99,999 lbs 27.4 0.7 38.0 2.9 S S 36.3
100,000 lbs or more S S 43.4 0.9 S S 31.7

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 S S 38.6 – 39.0 – 17.3
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 S S S S S S 29.9
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 30.9 17.3 44.0 9.9 48.4 10.2 13.0

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 39.2 – S S 39.6 – 41.2
Less than 50 lbs 36.7 10.5 34.0 11.0 34.7 11.2 12.6
50 to 99 lbs S S 36.4 0.8 36.7 1.0 21.0
100 to 499 lbs S S 29.8 14.9 40.1 14.2 36.9
500 to 749 lbs S S S S S S 28.3
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs 36.9 7.8 S S 40.0 5.8 S
10,000 to 49,999 lbs S S S S 44.3 9.2 S
50,000 to 99,999 lbs S S S S S S 34.9
100,000 lbs or more – – – – – – –

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 21.0 – 30.9 – 49.8 – 12.7
Less than 50 lbs 15.3 4.4 14.4 8.3 24.6 12.2 13.1
50 to 99 lbs 47.5 3.1 30.1 3.4 31.5 3.1 15.2
100 to 499 lbs 35.8 2.1 38.2 5.0 35.3 6.6 18.6
500 to 749 lbs 47.4 0.3 S S S S 24.8
750 to 999 lbs S S S S S S 33.2
1,000 to 9,999 lbs S S S S S S S
10,000 to 49,999 lbs S S S S S S 22.4
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S S S S S 31.6

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 22.3 – 22.6 – 26.5 – 12.7
Less than 50 lbs 15.3 4.5 14.7 9.4 24.6 10.9 13.0
50 to 99 lbs 47.5 3.1 30.1 2.8 31.5 2.5 15.2
100 to 499 lbs 35.8 2.3 38.2 4.5 35.3 5.8 18.6
500 to 749 lbs 47.4 0.3 S S S S 24.8
750 to 999 lbs S S S S S S 33.2
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 45.4 – S S S S S
Less than 50 lbs S S S S S S S
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 S
10,000 to 49,999 lbs S S S S S S 22.4
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S S S S S 31.6

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 38.1 – 39.0 – S S 23.4
Less than 50 lbs S S S S 39.1 0.1 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 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 26.7
10,000 to 49,999 lbs S S 34.7 6.7 31.2 12.0 48.0
50,000 to 99,999 lbs 47.3 2.7 46.0 14.7 46.0 12.2 25.8
100,000 lbs or more S S S S S S 31.6

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.