Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for CBSA of Origin: 2002

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 3.2 18.9 4.6 9.4
Less than 50 lbs 13.3 0.8 20.3 16.8 0.1 7.6
50 to 99 lbs 11.0 0.2 11.9 17.5 19.7
100 to 499 lbs 9.4 1.0 11.6 0.3 16.2 0.4 11.2
500 to 749 lbs 23.4 0.8 12.2 0.1 25.5 0.3 22.4
750 to 999 lbs 11.5 0.3 13.8 0.1 14.4 0.1 11.2
1,000 to 9,999 lbs 9.6 1.9 16.2 1.1 12.9 1.9 17.4
10,000 to 49,999 lbs 6.3 2.7 23.8 3.9 5.5 2.8 18.0
50,000 to 99,999 lbs 22.2 0.6 22.6 3.8 23.6 1.6 17.6
100,000 lbs or more 39.8 0.3 30.8 1.0 26.6 1.9 17.8

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 3.3 18.3 5.0 18.1
Less than 50 lbs 20.4 0.5 26.5 19.2 35.2
50 to 99 lbs 14.9 0.2 17.3 19.8 27.8
100 to 499 lbs 8.9 1.0 11.6 0.3 17.3 0.4 12.6
500 to 749 lbs 23.7 0.8 12.1 0.1 25.8 0.3 22.9
750 to 999 lbs 11.9 0.3 13.7 0.1 13.7 0.1 12.6
1,000 to 9,999 lbs 9.5 2.2 16.3 1.1 13.4 1.9 17.3
10,000 to 49,999 lbs 6.5 2.7 23.3 3.8 5.7 2.9 16.6
50,000 to 99,999 lbs 22.3 0.7 22.7 3.7 23.6 1.7 17.6
100,000 lbs or more 39.8 0.3 30.8 1.1 26.6 2.0 17.8

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 3.8 18.4 5.2 19.3
Less than 50 lbs 26.7 0.4 27.5 21.6 38.4
50 to 99 lbs 17.4 0.2 17.8 20.8 30.1
100 to 499 lbs 11.2 1.1 11.6 0.3 17.8 0.4 13.4
500 to 749 lbs 23.7 0.8 12.1 0.1 25.8 0.3 22.9
750 to 999 lbs 12.0 0.3 13.7 0.1 13.8 0.1 12.6
1,000 to 9,999 lbs 9.4 2.5 16.3 1.2 13.4 2.0 17.4
10,000 to 49,999 lbs 6.7 2.8 23.3 3.7 6.3 3.0 16.8
50,000 to 99,999 lbs 22.5 0.7 22.7 3.8 23.7 1.8 17.6
100,000 lbs or more 48.3 0.3 29.6 0.8 35.0 1.7 13.1

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 44.2 38.0 44.1 32.7
Less than 50 lbs
50 to 99 lbs S S S S S S 31.2
100 to 499 lbs S S S S S S 31.5
500 to 749 lbs
750 to 999 lbs
1,000 to 9,999 lbs
10,000 to 49,999 lbs S S S S S S 26.2
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 31.7 14.0 38.7 17.8 43.5 15.6 26.4

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 38.9 36.1 36.4 12.2
Less than 50 lbs 28.2 9.4 30.3 3.9 25.7 5.0 14.4
50 to 99 lbs 44.1 3.1 43.9 4.1 45.5 2.5 19.9
100 to 499 lbs S S S S 49.0 6.7 23.1
500 to 749 lbs S S 46.1 3.8 S S 27.7
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs 43.6 2.6 S S 46.4 6.6 41.7
10,000 to 49,999 lbs S S S S S S 29.1
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 14.4 20.0 19.2 6.8
Less than 50 lbs 14.6 4.7 23.2 5.1 19.0 5.8 6.6
50 to 99 lbs 18.4 2.3 24.5 2.8 20.6 4.8 21.6
100 to 499 lbs 23.8 2.4 24.4 3.6 20.8 3.1 14.2
500 to 749 lbs S S S S S S 38.4
750 to 999 lbs 45.9 0.3 37.3 2.4 S S 41.4
1,000 to 9,999 lbs S S S S S S 34.4
10,000 to 49,999 lbs S S 36.4 2.7 37.1 7.1 22.4
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 14.1 19.6 13.1 6.8
Less than 50 lbs 14.6 4.3 23.2 4.8 19.0 5.4 6.6
50 to 99 lbs 18.4 2.3 24.5 2.5 20.6 4.0 21.6
100 to 499 lbs 23.8 2.8 24.4 4.6 20.9 4.8 14.4
500 to 749 lbs S S 48.4 0.8 S S 40.9
750 to 999 lbs 39.7 0.3 40.9 2.7 S S 40.6
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 38.4 35.9 16.7
Less than 50 lbs S S S S S S 27.9
50 to 99 lbs
100 to 499 lbs S S S S S S 30.2
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs S S S S S S 31.1
1,000 to 9,999 lbs S S S S S S 34.4
10,000 to 49,999 lbs S S 36.4 16.1 37.1 17.1 22.4
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 17.8 S S 26.7 21.1
Less than 50 lbs 46.0 3.3 31.6 0.4 45.2 0.2 23.9
50 to 99 lbs 44.3 0.5 44.1 0.5 S S 49.4
100 to 499 lbs 43.6 3.7 27.2 1.1 S S 41.8
500 to 749 lbs S S S S S S S
750 to 999 lbs S S S S S S 29.0
1,000 to 9,999 lbs 14.4 6.5 41.5 5.3 32.1 6.2 31.7
10,000 to 49,999 lbs 25.8 6.7 S S 33.1 7.2 S
50,000 to 99,999 lbs S S S S S S 29.6
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.