Table B-3. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Distance Shipped for CBSA of Origin: 2002

Table B-3. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Distance Shipped for CBSA of Origin: 2002

[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]

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All modes

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 5.0 11.8 13.5
Less than 50 miles 12.0 1.8 21.2 5.1 18.7 2.0
50 to 99 miles 9.5 1.6 13.3 1.9 13.8 1.2
100 to 249 miles 4.1 0.9 12.6 2.1 15.6 2.4
250 to 499 miles 6.5 0.9 12.5 1.4 18.5 3.5
500 to 749 miles 15.0 0.8 14.9 0.7 15.9 1.5
750 to 999 miles 17.0 0.5 17.4 0.1 17.7 1.4
1,000 to 1,499 miles 13.3 0.7 S S S S
1,500 to 1,999 miles 19.9 0.3 27.8 0.1 28.8 0.8
2,000 miles or more 13.1 0.5 16.0 0.2 15.9 2.1

Single modes

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 4.0 12.5 16.5
Less than 50 miles 12.7 2.2 21.7 5.2 19.5 2.3
50 to 99 miles 10.7 1.7 13.0 2.1 13.3 1.3
100 to 249 miles 4.7 0.9 14.8 2.2 19.3 2.6
250 to 499 miles 6.6 0.8 13.5 1.3 14.1 1.8
500 to 749 miles 6.8 0.4 15.0 0.8 16.0 1.9
750 to 999 miles 14.3 0.5 19.3 0.1 19.8 1.6
1,000 to 1,499 miles 16.2 0.8 S S S S
1,500 to 1,999 miles 20.8 0.2 29.1 0.1 30.1 1.3
2,000 miles or more 17.3 0.5 18.1 0.2 18.1 2.3

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 3.6 16.1 17.6
Less than 50 miles 12.7 2.4 24.7 5.7 30.1 2.3
50 to 99 miles 10.7 1.7 17.3 2.5 16.4 1.5
100 to 249 miles 5.6 1.2 10.0 1.6 10.5 1.6
250 to 499 miles 6.6 0.8 10.9 1.6 10.8 2.4
500 to 749 miles 6.6 0.4 15.7 0.9 14.5 2.0
750 to 999 miles 14.5 0.5 20.8 0.2 21.5 1.5
1,000 to 1,499 miles 15.8 0.7 S S S S
1,500 to 1,999 miles 22.1 0.2 15.8 15.2 0.4
2,000 miles or more 18.2 0.5 18.4 0.2 18.4 2.5

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 13.5 28.1 27.3
Less than 50 miles 21.0 4.7 19.8 11.4 33.6 5.0
50 to 99 miles 31.0 3.5 36.9 4.7 36.9 2.4
100 to 249 miles 34.7 5.9 37.7 9.0 37.1 10.1
250 to 499 miles 18.4 3.1 36.1 2.1 36.9 2.9
500 to 749 miles 33.0 2.1 43.4 1.2 45.2 3.5
750 to 999 miles 32.5 3.5 37.2 0.5 38.5 2.9
1,000 to 1,499 miles S S 38.4 0.5 38.4 4.4
1,500 to 1,999 miles 37.1 1.8 S S S S
2,000 miles or more 40.6 3.3 31.7 0.3 31.3 2.6

All other Single modes

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances S S 44.5 43.3
Less than 50 miles 44.0 7.4 44.4 16.5 46.7 14.2
50 to 99 miles 35.0 2.8 S S S S
100 to 249 miles S S S S 46.1 3.0
250 to 499 miles 26.1 1.4 33.4 5.2 34.3 2.9
500 to 749 miles 39.7 3.5 43.0 1.1 46.5 0.7
750 to 999 miles 40.9 2.5 S S S S
1,000 to 1,499 miles 40.7 1.5 35.8 1.4 34.5 1.3
1,500 to 1,999 miles S S 37.0 2.4 38.7 3.6
2,000 miles or more 24.4 4.2 44.1 5.6 44.0 8.6

Multiple modes

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 18.6 37.8 39.6
Less than 50 miles 19.8 1.8 S S S S
50 to 99 miles 14.4 1.2 22.2 3.0 27.3 0.5
100 to 249 miles 10.1 2.2 37.0 7.3 38.5 8.0
250 to 499 miles 9.1 2.3 S S S S
500 to 749 miles S S 20.9 1.4 20.9 1.3
750 to 999 miles 24.9 0.4 S S S S
1,000 to 1,499 miles 13.8 0.4 28.9 0.9 31.4 1.5
1,500 to 1,999 miles 25.8 1.0 33.1 1.5 33.3 2.7
2,000 miles or more 8.2 0.9 27.9 3.2 28.6 10.1

Parcel, USPS or courier

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 18.7 16.7 13.1
Less than 50 miles 19.6 1.8 28.9 1.7 28.8 0.1
50 to 99 miles 14.4 1.3 22.2 2.7 27.3 1.1
100 to 249 miles 10.4 2.3 19.9 1.4 18.4 1.2
250 to 499 miles 9.9 2.3 21.3 1.7 20.2 1.0
500 to 749 miles S S 20.9 1.4 20.9 1.3
750 to 999 miles 26.1 0.4 8.7 0.8 8.4 0.9
1,000 to 1,499 miles 14.2 0.5 21.8 0.6 25.1 1.5
1,500 to 1,999 miles 26.2 1.0 9.1 0.6 8.5 1.6
2,000 miles or more 6.9 0.9 14.2 1.0 14.1 2.4

All other multiple modes

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 25.0 40.6 41.9
Less than 50 miles 42.1 3.5 S S S S
50 to 99 miles S S S S S S
100 to 249 miles 36.7 6.5 39.4 9.9 39.4 9.7
250 to 499 miles S S S S S S
500 to 749 miles
750 to 999 miles S S S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more 49.2 10.8 40.6 15.6 40.3 17.7

Other and unknown modes

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 28.3 24.7 22.3
Less than 50 miles 47.7 12.1 S S 34.4 1.6
50 to 99 miles 31.3 5.0 S S S S
100 to 249 miles 15.7 3.2 S S S S
250 to 499 miles 35.8 2.9 40.8 2.4 42.1 5.6
500 to 749 miles S S 32.0 1.5 33.7 2.0
750 to 999 miles S S 26.4 0.9 26.6 6.1
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more 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

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SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Metropolitan Data, December 2004.