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 28.5 12.3 8.0 39.3
Less than 50 lbs 44.9 2.1 28.3 27.1 49.4
50 to 99 lbs 16.6 0.3 34.8 25.7 S
100 to 499 lbs 15.8 0.9 37.9 32.1 S
500 to 749 lbs 35.1 0.6 47.4 19.9 S
750 to 999 lbs 20.1 0.2 42.8 28.9 S
1,000 to 9,999 lbs 13.3 3.1 20.3 0.7 8.2 0.6 24.8
10,000 to 49,999 lbs 48.3 6.7 25.4 4.3 13.8 2.9 28.7
50,000 to 99,999 lbs 36.3 2.0 13.8 5.0 12.6 1.9 15.8
100,000 lbs or more 27.8 3.5 22.4 5.5 10.8 3.0 14.8

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 30.4 12.4 9.2 31.5
Less than 50 lbs 30.0 0.2 48.1 25.8 S
50 to 99 lbs 23.0 0.1 S S 24.2 S
100 to 499 lbs 20.5 0.8 39.2 35.4 S
500 to 749 lbs 37.0 0.6 45.5 23.0 S
750 to 999 lbs 21.4 0.2 36.2 33.6 S
1,000 to 9,999 lbs 12.9 3.2 20.5 0.7 7.8 0.6 25.8
10,000 to 49,999 lbs 48.7 6.6 26.4 4.2 14.7 3.4 28.8
50,000 to 99,999 lbs 37.0 2.0 14.4 5.1 12.1 1.9 15.4
100,000 lbs or more 27.8 3.7 20.0 5.0 12.9 3.3 16.7

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 33.8 12.5 15.0 32.2
Less than 50 lbs 30.9 0.3 48.4 25.1 S
50 to 99 lbs 24.3 0.1 S S 25.3 S
100 to 499 lbs 20.6 0.9 39.2 0.1 35.6 0.2 S
500 to 749 lbs 37.0 0.7 45.5 22.9 S
750 to 999 lbs 21.4 0.3 36.2 33.6 0.1 S
1,000 to 9,999 lbs 12.9 3.8 20.6 0.7 7.9 1.1 25.9
10,000 to 49,999 lbs 48.9 6.1 26.5 5.9 14.8 4.2 29.2
50,000 to 99,999 lbs 37.3 2.2 14.5 5.5 12.5 3.8 15.6
100,000 lbs or more 49.3 0.7 38.1 4.2 S S 24.9

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 25.4 19.7 15.9 16.3
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 30.4
10,000 to 49,999 lbs 48.4 4.7 S S 38.4 0.6 33.6
50,000 to 99,999 lbs S S 48.8 0.7 34.3 0.4 39.5
100,000 lbs or more 26.7 4.4 20.3 1.6 16.2 0.9 15.6

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 41.8 39.3 40.9 19.8
Less than 50 lbs S S S S S S 24.4
50 to 99 lbs S S 46.2 3.0 43.9 3.3 24.1
100 to 499 lbs S S S S S S 26.9
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs
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 41.9 14.6 39.3 14.9 40.9 14.9 24.4

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 43.7 31.5 30.2 12.4
Less than 50 lbs S S S S 31.7 5.7 12.2
50 to 99 lbs 28.4 6.8 43.5 5.6 34.5 4.8 23.1
100 to 499 lbs S S 27.3 0.6 32.3 0.8 15.1
500 to 749 lbs S S S S S S 28.5
750 to 999 lbs S S S S S S 27.9
1,000 to 9,999 lbs S S S S S S 31.6
10,000 to 49,999 lbs 32.2 5.3 S S 39.9 11.1 24.6
50,000 to 99,999 lbs S S S S S S 29.9
100,000 lbs or more 40.3 1.0 41.2 18.7 41.0 17.8 24.3

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 47.7 36.5 32.7 12.3
Less than 50 lbs S S S S 31.7 5.0 12.2
50 to 99 lbs 28.4 8.3 43.5 4.2 34.5 3.6 23.1
100 to 499 lbs S S 27.3 5.1 32.3 3.7 15.1
500 to 749 lbs S S S S S S 28.5
750 to 999 lbs S S S S S S 27.9
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 25.9 31.9 30.8 39.3
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 32.2 8.3 S S 39.9 12.1 24.6
50,000 to 99,999 lbs S S S S S S 29.9
100,000 lbs or more 40.3 2.9 41.2 17.0 41.0 16.3 24.3

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 38.0 S S 40.9 S
Less than 50 lbs S S S S S S S
50 to 99 lbs S S S S S S S
100 to 499 lbs S S S S S S 26.4
500 to 749 lbs S S S S S S S
750 to 999 lbs S S S S S S S
1,000 to 9,999 lbs S S 31.6 13.3 47.7 15.3 32.0
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 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.