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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

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 49.5 – 12.5 – 11.2 – 12.9
Less than 50 lbs 49.3 1.3 15.3 0.1 25.9 0.7 11.1
50 to 99 lbs S S 15.5 0.1 23.6 0.4 20.5
100 to 499 lbs S S 14.5 0.6 22.8 0.9 13.4
500 to 749 lbs 20.0 0.8 12.0 0.3 17.1 0.2 14.9
750 to 999 lbs 15.0 0.6 14.4 0.2 13.3 0.3 S
1,000 to 9,999 lbs S S 14.5 2.4 13.1 2.6 18.9
10,000 to 49,999 lbs S S 18.0 3.8 12.0 2.5 21.4
50,000 to 99,999 lbs 18.4 0.7 23.8 4.6 22.7 2.2 19.8
100,000 lbs or more 41.9 1.1 35.9 2.5 S S 30.5

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 S S 12.8 – 12.1 – 15.4
Less than 50 lbs S S 25.4 – 34.3 – 30.7
50 to 99 lbs S S 22.5 0.1 28.9 – 16.0
100 to 499 lbs S S 16.7 0.6 30.7 1.1 11.9
500 to 749 lbs 23.1 0.9 12.5 0.3 20.3 0.3 14.5
750 to 999 lbs 18.9 0.7 15.3 0.3 13.4 0.2 37.0
1,000 to 9,999 lbs S S 15.5 2.5 11.8 2.7 17.3
10,000 to 49,999 lbs S S 18.3 3.7 12.6 2.7 21.7
50,000 to 99,999 lbs 18.6 0.9 23.8 4.8 24.7 2.3 19.5
100,000 lbs or more 39.9 1.7 34.4 2.5 S S 33.2

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 48.0 – 12.6 – 11.0 – 13.0
Less than 50 lbs 24.0 0.8 26.3 – 14.2 – 37.0
50 to 99 lbs 17.0 0.4 21.2 0.1 17.9 – 18.8
100 to 499 lbs S S 16.1 0.6 28.2 1.0 11.5
500 to 749 lbs 23.7 0.9 12.4 0.3 20.4 0.4 14.6
750 to 999 lbs 19.3 0.6 15.4 0.3 13.6 0.2 37.2
1,000 to 9,999 lbs S S 15.4 2.5 10.7 2.4 18.8
10,000 to 49,999 lbs S S 18.2 3.7 11.5 2.2 22.4
50,000 to 99,999 lbs 18.6 0.9 23.9 4.9 24.6 2.4 18.4
100,000 lbs or more 41.5 1.7 31.1 2.4 S S 29.4

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 S S S S S
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 30.5
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 S S S S S S 29.9

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 S S S S S S 8.2
Less than 50 lbs S S S S S S 8.0
50 to 99 lbs S S S S S S 25.0
100 to 499 lbs S S S S S S 17.4
500 to 749 lbs S S S S S S 37.0
750 to 999 lbs S S S S S S 44.8
1,000 to 9,999 lbs 49.7 2.8 S S S S 27.9
10,000 to 49,999 lbs S S S S S S 31.6
50,000 to 99,999 lbs – – – – – – –
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 44.4 – 15.4 – 22.4 – 7.0
Less than 50 lbs 42.7 4.2 21.1 5.0 28.5 4.2 6.5
50 to 99 lbs S S 14.4 1.4 27.6 1.6 13.5
100 to 499 lbs 41.7 3.2 22.2 4.8 26.4 4.6 11.3
500 to 749 lbs S S 44.0 1.9 37.7 1.3 38.9
750 to 999 lbs S S 48.8 0.8 S S 21.8
1,000 to 9,999 lbs 44.1 0.2 38.3 1.5 39.0 1.9 46.2
10,000 to 49,999 lbs S S S S S S 29.8
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 44.5 – 16.9 – 24.7 – 7.0
Less than 50 lbs 42.7 4.3 21.1 5.3 28.5 5.1 6.5
50 to 99 lbs S S 14.4 1.7 27.6 1.9 13.5
100 to 499 lbs 41.7 3.2 22.2 5.2 26.5 4.5 11.1
500 to 749 lbs S S 44.0 1.9 37.8 1.3 38.6
750 to 999 lbs S S 48.8 0.9 S S 21.8
1,000 to 9,999 lbs S S S S S S 29.7
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 30.7 – S S S S 37.3
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs – – – – – – –
100 to 499 lbs S S S S S S 31.6
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs 46.6 12.5 48.2 14.1 44.7 14.0 42.3
10,000 to 49,999 lbs S S S S S S 29.8
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 40.6 – 29.3 – S S 48.2
Less than 50 lbs 23.2 4.6 24.2 0.7 37.1 0.1 S
50 to 99 lbs 35.5 1.4 44.1 0.4 37.1 – S
100 to 499 lbs S S 40.3 1.4 S S 44.4
500 to 749 lbs S S S S S S S
750 to 999 lbs S S S S S S 30.7
1,000 to 9,999 lbs S S 44.2 5.6 S S 21.2
10,000 to 49,999 lbs S S 31.8 10.0 S S 28.3
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more S S S S S S S

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.