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

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

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 8.7 22.1 10.0 17.6
Less than 50 lbs 24.2 2.1 18.7 30.2 0.1 15.4
50 to 99 lbs 26.0 0.6 13.7 14.6 18.4
100 to 499 lbs 31.0 3.2 17.1 0.3 9.6 22.7
500 to 749 lbs 26.5 0.6 18.9 0.1 18.4 29.4
750 to 999 lbs 18.3 0.2 16.6 0.1 21.0 18.1
1,000 to 9,999 lbs 21.7 4.8 16.3 1.8 30.6 3.2 18.4
10,000 to 49,999 lbs 6.5 3.4 14.9 6.2 8.5 4.4 18.6
50,000 to 99,999 lbs 29.3 1.6 29.9 6.4 29.7 2.8 22.1
100,000 lbs or more 44.3 4.4 36.8 7.9 29.1 5.2 S

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 7.7 22.6 10.8 24.4
Less than 50 lbs 17.2 0.4 19.2 25.7 44.8
50 to 99 lbs 21.1 0.3 17.3 17.4 46.2
100 to 499 lbs 34.0 3.8 14.9 0.2 14.3 0.1 30.3
500 to 749 lbs 28.2 0.7 13.6 0.1 21.6 31.2
750 to 999 lbs 22.0 0.2 15.7 23.2 19.3
1,000 to 9,999 lbs 20.5 4.4 15.2 1.6 12.2 1.2 10.2
10,000 to 49,999 lbs 7.1 3.8 15.4 6.6 9.4 4.8 19.2
50,000 to 99,999 lbs 29.3 1.8 29.9 6.5 29.7 2.8 22.0
100,000 lbs or more 44.6 4.7 37.2 8.0 29.2 5.3 S

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 8.5 16.5 7.0 18.0
Less than 50 lbs 17.7 0.3 20.3 22.3 49.2
50 to 99 lbs 21.9 0.4 17.4 17.8 43.0
100 to 499 lbs 35.4 3.9 15.3 0.2 14.6 0.1 24.4
500 to 749 lbs 29.3 0.7 13.7 20.1 23.7
750 to 999 lbs 23.6 0.3 15.7 23.8 19.8
1,000 to 9,999 lbs 20.7 4.4 15.2 1.5 12.2 1.3 10.1
10,000 to 49,999 lbs 7.1 4.7 15.3 5.3 9.6 3.4 19.3
50,000 to 99,999 lbs 29.6 2.6 29.9 7.0 30.0 3.2 18.9
100,000 lbs or more 34.1 0.2 38.2 4.1 31.2 1.7 S

For-hire 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 12.8 17.3 10.1 11.2
Less than 50 lbs 39.3 0.5 24.2 38.7 23.8
50 to 99 lbs 47.7 0.6 31.0 29.0 18.5
100 to 499 lbs 40.6 5.0 17.7 16.3 0.1 13.7
500 to 749 lbs 40.1 0.5 18.3 22.9 0.1 14.5
750 to 999 lbs 46.1 0.3 18.0 25.1 0.1 19.2
1,000 to 9,999 lbs 29.2 5.3 17.4 0.9 15.0 1.1 5.2
10,000 to 49,999 lbs 8.1 6.3 15.7 5.8 14.0 4.0 20.2
50,000 to 99,999 lbs 27.8 2.2 28.0 7.1 28.1 2.9 19.6
100,000 lbs or more 37.7 0.3 44.9 5.4 43.3 2.6 33.3

Private 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 9.1 20.9 13.0 11.5
Less than 50 lbs 23.4 1.4 24.0 0.1 35.4 14.9
50 to 99 lbs 12.3 0.5 19.4 0.1 22.4 21.8
100 to 499 lbs 15.2 1.3 17.1 0.5 14.3 23.0
500 to 749 lbs 38.1 1.1 14.7 0.2 12.7 21.9
750 to 999 lbs 20.9 0.3 18.5 0.2 27.8 31.1
1,000 to 9,999 lbs 23.0 5.8 18.6 2.7 21.1 2.4 6.6
10,000 to 49,999 lbs 18.3 4.8 24.0 6.6 16.4 4.7 20.3
50,000 to 99,999 lbs 41.3 3.6 37.1 8.2 35.9 4.4 18.4
100,000 lbs or more S S S S S S 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 S S 28.1 37.2 38.1
Less than 50 lbs
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
10,000 to 49,999 lbs S S S S S S 39.2
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more S S 28.3 10.5 37.7 10.5 30.6

Water

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 44.1 S S 49.0 26.6
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
10,000 to 49,999 lbs S S S S S S 31.6
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 28.0

Shallow draft

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 S S S S 28.0
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
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 28.0

Great Lakes

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
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
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more

Deep draft

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 S S 48.5 31.6
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
10,000 to 49,999 lbs S S S S S S 31.6
50,000 to 99,999 lbs
100,000 lbs or more 0.8 4.0 4.4 33.3

Air (including truck and air)

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 37.9 48.3 S S 8.8
Less than 50 lbs 40.4 10.1 32.7 10.1 37.2 11.4 13.6
50 to 99 lbs S S S S S S 26.6
100 to 499 lbs S S S S S S 22.4
500 to 749 lbs S S S S S S 30.4
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs S S S S S S 29.0
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more

Pipeline

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 48.6 48.5 S S S
Less than 50 lbs S S S
50 to 99 lbs S S S
100 to 499 lbs S S S
500 to 749 lbs S S S
750 to 999 lbs S S S
1,000 to 9,999 lbs S S S S S S S
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 48.7 8.1 48.6 6.2 S S S

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 24.1 28.4 44.2 11.9
Less than 50 lbs 32.8 8.7 28.0 9.7 36.3 11.9 11.9
50 to 99 lbs 41.0 4.1 24.9 0.9 22.4 1.8 14.7
100 to 499 lbs 30.3 4.2 38.0 8.5 33.3 9.3 29.5
500 to 749 lbs 41.8 0.9 47.6 4.7 47.9 3.4 S
750 to 999 lbs S S S S S S 27.9
1,000 to 9,999 lbs S S S S S S 27.9
10,000 to 49,999 lbs 48.6 3.0 S S S S 26.6
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 31.6

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 25.2 31.3 25.7 12.7
Less than 50 lbs 32.8 5.4 28.0 10.9 36.3 8.5 11.9
50 to 99 lbs 41.0 4.0 24.9 4.6 22.4 3.8 14.7
100 to 499 lbs 30.3 3.5 38.0 7.3 33.3 6.4 29.5
500 to 749 lbs 41.8 0.9 47.6 5.4 47.9 2.9 S
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
50,000 to 99,999 lbs
100,000 lbs or more

Truck and 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 S S S S S S 26.3
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 27.9
10,000 to 49,999 lbs 48.6 9.8 S S S S 26.6
50,000 to 99,999 lbs
100,000 lbs or more

Truck and water

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 S S S S 31.6
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
50,000 to 99,999 lbs
100,000 lbs or more

Rail and water

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
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
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more

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 S S S S 31.6
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
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 31.6

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 31.0 S S S S S
Less than 50 lbs S S S S 34.7 0.4 S
50 to 99 lbs 40.6 1.8 38.0 1.5 42.7 0.3 S
100 to 499 lbs 31.3 4.0 28.4 3.9 31.2 1.1 35.3
500 to 749 lbs S S S S S S 43.9
750 to 999 lbs S S S S S S 34.5
1,000 to 9,999 lbs 41.2 7.1 37.9 8.2 39.7 13.4 28.1
10,000 to 49,999 lbs S S S S S S 33.6
50,000 to 99,999 lbs S S S S S S 29.8
100,000 lbs or more S 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

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.