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Table B–3. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Distance Shipped for State 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 5.8 – 14.0 – 11.7 –
Less than 50 miles 13.7 2.6 19.3 3.4 22.3 0.5
50 to 99 miles 21.1 2.5 12.8 2.6 13.4 0.8
100 to 249 miles 13.6 2.1 18.2 1.4 16.2 1.2
250 to 499 miles 17.8 2.4 30.5 1.6 27.5 3.3
500 to 749 miles 12.2 0.6 21.5 0.9 22.2 1.5
750 to 999 miles 17.3 2.0 14.3 1.4 13.5 3.1
1,000 to 1,499 miles 14.3 1.5 16.3 0.8 17.6 2.3
1,500 to 1,999 miles 34.5 0.7 S S S S
2,000 miles or more 12.8 0.5 27.6 0.4 26.0 2.0

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 6.7 – 14.3 – 11.5 –
Less than 50 miles 13.1 2.6 19.2 3.3 22.5 0.4
50 to 99 miles 22.6 2.8 13.3 2.6 13.8 0.8
100 to 249 miles 15.2 2.1 18.9 1.5 16.8 1.2
250 to 499 miles 19.2 2.7 32.3 1.7 29.1 3.3
500 to 749 miles 13.1 0.7 21.4 1.0 22.2 1.5
750 to 999 miles 15.4 1.7 13.4 1.4 12.7 3.2
1,000 to 1,499 miles 15.3 1.6 15.7 0.8 16.8 2.2
1,500 to 1,999 miles 36.6 0.5 S S S S
2,000 miles or more 16.8 0.5 29.9 0.4 27.7 2.1

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 6.8 – 14.7 – 15.0 –
Less than 50 miles 13.2 2.9 16.4 3.2 21.9 0.7
50 to 99 miles 22.3 2.9 15.7 2.9 16.4 1.8
100 to 249 miles 15.9 2.3 18.3 1.8 16.8 1.7
250 to 499 miles 22.0 2.9 37.0 2.2 35.2 4.3
500 to 749 miles 18.4 0.8 29.7 0.9 28.5 1.7
750 to 999 miles 15.8 1.5 20.6 0.9 19.6 2.3
1,000 to 1,499 miles 21.9 1.9 20.4 0.8 20.6 3.2
1,500 to 1,999 miles 18.0 0.3 43.8 0.2 42.1 0.9
2,000 miles or more 19.5 0.5 14.2 0.1 14.0 1.2

For-hire truck

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 5.5 – 22.0 – 16.6 –
Less than 50 miles 17.4 1.5 39.5 5.3 S S
50 to 99 miles 8.1 0.3 33.8 1.5 35.1 0.7
100 to 249 miles 16.7 4.7 28.7 2.7 26.8 1.2
250 to 499 miles 23.9 4.9 40.5 3.9 38.6 4.6
500 to 749 miles 15.8 1.4 28.2 2.2 26.8 1.9
750 to 999 miles 16.8 1.6 18.4 1.8 17.6 3.3
1,000 to 1,499 miles 23.3 2.5 20.8 2.0 21.0 3.6
1,500 to 1,999 miles 21.2 0.5 43.5 0.3 41.8 0.8
2,000 miles or more 19.4 0.6 14.3 0.4 14.0 1.6

Private truck

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 14.2 – 16.2 – 14.7 –
Less than 50 miles 15.1 4.0 22.0 5.6 18.8 3.5
50 to 99 miles 25.7 3.8 21.7 3.5 21.9 3.8
100 to 249 miles 17.7 2.6 14.0 2.3 14.7 3.3
250 to 499 miles 25.4 0.8 S S S S
500 to 749 miles S S S S S S
750 to 999 miles 33.1 0.3 S S S S
1,000 to 1,499 miles S S 37.2 0.1 38.2 1.1
1,500 to 1,999 miles S S S S S S
2,000 miles or more S S S S S S

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 20.0 – 18.3 – 23.6 –
Less than 50 miles S S S S S S
50 to 99 miles 27.5 1.5 37.3 4.4 33.4 0.6
100 to 249 miles 32.9 1.4 45.4 3.2 34.4 0.9
250 to 499 miles 23.9 1.9 19.8 2.0 18.5 1.6
500 to 749 miles 35.3 2.4 32.8 1.9 37.9 2.1
750 to 999 miles 20.1 6.6 19.7 5.3 18.7 6.8
1,000 to 1,499 miles 21.7 5.7 19.5 5.2 24.0 6.0
1,500 to 1,999 miles S S S S S S
2,000 miles or more S S S S S S

Water

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 S S S S
Less than 50 miles – – – – – –
50 to 99 miles S S S S S S
100 to 249 miles – – – – – –
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles – – – – – –
1,000 to 1,499 miles – – – – – –
1,500 to 1,999 miles – – – – – –
2,000 miles or more – – – – – –

Shallow draft

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances – – – – – –
Less than 50 miles – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles – – – – – –
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles – – – – – –
1,000 to 1,499 miles – – – – – –
1,500 to 1,999 miles – – – – – –
2,000 miles or more – – – – – –

Great Lakes

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances – – – – – –
Less than 50 miles – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles – – – – – –
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles – – – – – –
1,000 to 1,499 miles – – – – – –
1,500 to 1,999 miles – – – – – –
2,000 miles or more – – – – – –

Deep draft

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 S S S S
Less than 50 miles – – – – – –
50 to 99 miles S S S S S S
100 to 249 miles – – – – – –
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles – – – – – –
1,000 to 1,499 miles – – – – – –
1,500 to 1,999 miles – – – – – –
2,000 miles or more – – – – – –

Air (including truck and air)

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 27.2 – 49.9 – S S
Less than 50 miles – – – – – –
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles 39.8 5.8 37.7 10.0 42.0 7.5
500 to 749 miles S S 42.3 5.3 43.4 5.0
750 to 999 miles 43.8 5.5 39.7 4.9 40.5 5.5
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 39.4 5.2 S S S S

Pipeline

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 S S S S
Less than 50 miles S S S S S S
50 to 99 miles – – – – S S
100 to 249 miles – – – – S S
250 to 499 miles – – – – S S
500 to 749 miles – – – – S S
750 to 999 miles – – – – S S
1,000 to 1,499 miles – – – – S S
1,500 to 1,999 miles – – – – S S
2,000 miles or more – – – – S S

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 19.8 – 11.5 – 16.3 –
Less than 50 miles 32.7 3.5 33.6 1.9 31.1 –
50 to 99 miles 21.5 2.3 33.1 2.7 39.2 1.4
100 to 249 miles 23.0 4.4 28.9 6.1 31.3 5.3
250 to 499 miles 27.2 2.2 23.8 2.1 25.4 1.5
500 to 749 miles 26.2 1.2 38.0 4.9 34.4 3.0
750 to 999 miles 23.7 1.2 42.7 2.7 33.5 2.0
1,000 to 1,499 miles 23.5 1.2 38.2 8.6 43.2 9.1
1,500 to 1,999 miles 42.8 1.6 40.3 0.8 41.5 1.4
2,000 miles or more 25.6 2.0 24.9 2.0 25.2 5.4

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 20.1 – 19.9 – 20.0 –
Less than 50 miles 32.5 3.6 33.3 2.4 31.1 0.1
50 to 99 miles 21.5 2.1 18.5 2.5 19.2 0.5
100 to 249 miles 23.0 4.8 25.8 2.8 25.8 2.0
250 to 499 miles 27.2 2.2 23.8 1.4 25.4 1.5
500 to 749 miles 26.7 1.2 28.6 1.1 28.6 1.2
750 to 999 miles 23.1 1.2 21.6 0.9 21.0 2.0
1,000 to 1,499 miles 24.6 1.2 21.5 1.5 21.4 1.4
1,500 to 1,999 miles 43.3 1.7 40.5 1.4 41.6 2.5
2,000 miles or more 26.1 2.0 23.2 2.1 23.1 4.2

Truck and rail

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 30.7 – 26.4 – 37.9 –
Less than 50 miles – – – – – –
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles – – – – – –
500 to 749 miles S S S S S S
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 49.6 15.6 S S S S

Truck and water

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 S S S S
Less than 50 miles – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles S S S S S S
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles – – – – – –
1,000 to 1,499 miles – – – – – –
1,500 to 1,999 miles – – – – – –
2,000 miles or more S S S S S S

Rail and water

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances – – – – – –
Less than 50 miles – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles – – – – – –
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles – – – – – –
1,000 to 1,499 miles – – – – – –
1,500 to 1,999 miles – – – – – –
2,000 miles or more – – – – – –

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 S S S S S S
Less than 50 miles S S S S S S
50 to 99 miles – – – – – –
100 to 249 miles – – – – – –
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles – – – – – –
1,000 to 1,499 miles – – – – – –
1,500 to 1,999 miles – – – – – –
2,000 miles or more – – – – – –

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 29.6 – 27.1 – 44.2 –
Less than 50 miles S S S S 26.2 4.6
50 to 99 miles S S 42.9 7.9 44.4 3.1
100 to 249 miles 42.6 2.7 36.5 5.6 36.4 5.3
250 to 499 miles 26.4 6.7 34.2 5.9 33.8 8.7
500 to 749 miles S S S S S S
750 to 999 miles S S S S S S
1,000 to 1,499 miles 44.9 3.7 S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more 43.6 1.6 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, Individual State Data, December 2004.
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