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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 7.0 – 41.5 – 17.5 – 13.9
Less than 50 lbs 12.7 2.3 15.7 0.1 14.2 0.2 13.0
50 to 99 lbs 15.6 0.8 20.5 – 17.2 – 10.8
100 to 499 lbs 13.9 1.5 22.1 0.2 10.0 0.2 19.9
500 to 749 lbs 21.3 1.1 19.2 0.1 19.8 0.1 19.6
750 to 999 lbs 22.7 0.4 22.4 – 18.3 – 19.1
1,000 to 9,999 lbs 11.1 2.0 23.1 1.1 24.6 0.9 21.2
10,000 to 49,999 lbs 15.2 3.1 S S 19.4 4.8 S
50,000 to 99,999 lbs 43.2 1.4 23.1 3.6 23.8 1.4 27.4
100,000 lbs or more 28.5 0.9 22.8 6.1 23.0 6.2 31.2

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 8.4 – 42.7 – 19.2 – 36.8
Less than 50 lbs 27.4 2.2 37.8 – 29.3 – S
50 to 99 lbs 14.5 0.5 22.6 – 27.6 – 23.2
100 to 499 lbs 17.0 1.6 25.2 0.2 9.3 0.2 25.9
500 to 749 lbs 22.4 1.4 18.8 0.1 21.3 0.1 21.2
750 to 999 lbs 24.1 0.5 22.2 – 21.9 – 12.3
1,000 to 9,999 lbs 11.0 2.4 23.2 1.2 23.7 1.0 20.8
10,000 to 49,999 lbs 15.4 4.2 S S 20.5 4.9 S
50,000 to 99,999 lbs 43.4 1.7 23.5 3.9 23.4 1.6 27.4
100,000 lbs or more 29.5 1.1 24.7 6.1 24.7 6.4 33.6

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 9.3 – S S 15.1 – 43.7
Less than 50 lbs 27.4 1.8 40.1 0.2 41.4 0.1 S
50 to 99 lbs 16.5 0.5 22.6 – 28.0 – 26.6
100 to 499 lbs 20.8 1.6 25.4 0.3 10.5 0.4 26.4
500 to 749 lbs 17.1 1.0 18.9 0.2 21.3 0.4 21.5
750 to 999 lbs 24.7 0.5 22.3 0.2 22.5 0.3 12.3
1,000 to 9,999 lbs 11.2 2.4 23.2 2.0 23.9 2.7 20.9
10,000 to 49,999 lbs 15.5 4.4 S S 20.7 5.7 S
50,000 to 99,999 lbs 43.7 1.8 23.4 5.9 24.7 2.2 26.7
100,000 lbs or more 47.0 0.3 S S 26.5 1.7 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 23.1 – 23.7 – 25.3 – 23.9
Less than 50 lbs S S S S S S S
50 to 99 lbs – – – – – – –
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 31.7
10,000 to 49,999 lbs 36.8 10.3 42.7 10.3 43.7 10.3 21.8
50,000 to 99,999 lbs 49.2 0.8 45.5 0.9 47.9 1.0 29.3
100,000 lbs or more 27.7 10.0 25.1 10.2 27.1 10.4 12.9

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 27.5 – 29.1 – 28.5 – 4.3
Less than 50 lbs 34.1 3.3 48.2 1.1 S S 4.3
50 to 99 lbs 25.1 4.0 48.3 0.2 49.5 0.2 8.7
100 to 499 lbs 34.4 4.4 27.1 6.4 23.2 7.0 17.9
500 to 749 lbs S S 45.1 0.8 45.4 0.5 27.9
750 to 999 lbs S S 48.5 1.5 S S 25.3
1,000 to 9,999 lbs 30.6 1.4 30.4 0.5 S S 24.1
10,000 to 49,999 lbs S S S S S S S
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more 41.7 5.9 29.3 10.5 28.5 10.5 15.5

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 12.2 – 18.0 – 23.3 – 5.8
Less than 50 lbs 12.5 4.4 14.2 5.3 12.6 8.3 5.8
50 to 99 lbs 26.0 3.5 23.0 2.5 20.3 1.7 10.1
100 to 499 lbs 22.7 2.2 28.8 2.8 27.3 2.1 12.8
500 to 749 lbs 28.3 0.2 S S S S 24.2
750 to 999 lbs 29.1 0.2 S S S S 39.9
1,000 to 9,999 lbs S S S S S S 27.9
10,000 to 49,999 lbs S S S S S S 25.4
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more S S 44.0 6.4 45.0 7.3 25.2

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 12.4 – 19.9 – 14.4 – 5.8
Less than 50 lbs 12.5 4.2 14.2 5.1 12.6 5.0 5.8
50 to 99 lbs 26.0 3.6 23.0 2.4 20.3 2.5 10.1
100 to 499 lbs 22.7 2.3 28.8 3.2 27.7 3.9 13.1
500 to 749 lbs 28.3 0.2 S S S S 24.2
750 to 999 lbs 29.1 0.2 S S S S 39.9
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 S S 33.3 – 36.6 – 33.7
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 30.8
500 to 749 lbs – – – – – – –
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs S S S S S S 28.0
10,000 to 49,999 lbs S S S S S S 25.4
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more S S 44.0 15.6 45.0 15.0 25.2

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 24.5 – 29.9 – 41.5 – 29.2
Less than 50 lbs 32.2 2.3 22.6 0.4 29.5 0.3 39.4
50 to 99 lbs 36.4 2.2 30.8 0.3 31.2 0.2 S
100 to 499 lbs 40.2 4.8 37.4 2.7 39.2 1.9 32.8
500 to 749 lbs 37.1 0.7 38.0 0.9 S S S
750 to 999 lbs S S S S 43.5 0.5 S
1,000 to 9,999 lbs 29.1 6.6 S S S S 26.5
10,000 to 49,999 lbs S S 46.2 7.6 33.7 14.7 S
50,000 to 99,999 lbs S S S S S S 28.5
100,000 lbs or more 25.0 3.0 40.7 13.4 S S 32.0

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.