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 14.5 14.2 38.1 10.0
Less than 50 lbs 14.9 3.5 27.7 0.1 32.4 1.3 8.0
50 to 99 lbs 15.3 0.9 8.7 18.6 0.4 15.0
100 to 499 lbs 16.7 2.2 18.4 0.3 40.6 1.1 22.1
500 to 749 lbs 44.0 1.1 25.3 0.2 49.8 1.8 19.7
750 to 999 lbs 10.4 0.2 17.7 21.1 0.3 27.3
1,000 to 9,999 lbs 29.4 2.7 22.3 2.0 S S 23.9
10,000 to 49,999 lbs 22.8 1.9 21.8 4.2 31.0 5.0 33.3
50,000 to 99,999 lbs 26.1 1.7 22.5 5.6 24.3 4.4 9.6
100,000 lbs or more 36.8 0.2 40.5 1.5 35.0 1.8 35.3

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 18.2 14.5 36.8 22.5
Less than 50 lbs 14.2 1.7 17.0 19.0 30.8
50 to 99 lbs 21.2 0.6 16.9 20.5 0.1 30.3
100 to 499 lbs 22.3 2.3 23.0 0.4 46.3 0.5 28.2
500 to 749 lbs 47.8 1.4 20.2 0.1 36.0 0.3 15.6
750 to 999 lbs 12.5 0.3 19.1 0.1 21.3 0.4 23.6
1,000 to 9,999 lbs 26.5 2.4 21.1 2.0 S S 23.9
10,000 to 49,999 lbs 22.1 1.9 21.8 4.3 31.1 4.8 33.4
50,000 to 99,999 lbs 26.7 2.7 22.5 5.6 24.4 5.6 9.6
100,000 lbs or more 36.9 0.4 32.9 1.1 33.8 1.0 45.8

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 18.8 14.5 37.3 24.0
Less than 50 lbs 14.9 1.4 18.3 19.1 33.7
50 to 99 lbs 20.0 0.4 17.4 24.2 0.1 37.6
100 to 499 lbs 23.0 2.3 23.5 0.4 S S 29.2
500 to 749 lbs 48.0 1.4 20.4 0.1 37.2 0.3 15.7
750 to 999 lbs 12.7 0.3 19.0 0.1 21.3 0.4 23.7
1,000 to 9,999 lbs 26.7 2.4 21.2 2.0 S S 24.0
10,000 to 49,999 lbs 22.3 2.0 21.8 4.3 31.1 5.0 33.5
50,000 to 99,999 lbs 26.7 2.8 22.5 5.6 24.4 5.6 9.6
100,000 lbs or more 37.2 0.4 33.1 1.1 40.2 1.0 44.7

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 31.5 19.2 48.1 12.6
Less than 50 lbs 29.8 1.3 13.5 24.5 0.1 15.3
50 to 99 lbs 41.5 0.7 20.3 31.4 0.2 20.6
100 to 499 lbs 30.7 4.4 32.7 0.4 S S 14.3
500 to 749 lbs S S 37.1 0.2 43.3 0.5 11.1
750 to 999 lbs 17.7 0.3 12.3 0.2 23.5 0.6 14.7
1,000 to 9,999 lbs 38.6 3.5 46.9 3.4 S S 15.0
10,000 to 49,999 lbs 37.8 2.6 23.6 4.9 39.4 5.0 16.9
50,000 to 99,999 lbs 32.6 2.5 29.5 7.0 33.4 4.8 12.9
100,000 lbs or more S S S S S S 31.3

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 11.5 19.0 22.9 14.0
Less than 50 lbs 20.9 2.5 21.8 23.9 35.8
50 to 99 lbs 14.5 0.4 20.6 23.0 26.5
100 to 499 lbs 22.0 2.4 29.4 0.4 34.3 1.1 27.5
500 to 749 lbs 14.7 0.5 25.2 37.5 0.3 24.7
750 to 999 lbs 14.9 0.3 26.0 0.1 26.2 0.2 17.6
1,000 to 9,999 lbs 13.1 2.2 17.9 1.1 19.5 2.1 11.6
10,000 to 49,999 lbs 24.9 3.0 29.1 5.1 35.5 5.0 20.0
50,000 to 99,999 lbs 31.0 3.9 24.2 5.9 27.8 6.4 13.2
100,000 lbs or more 45.3 1.0 34.2 2.2 43.5 3.7 48.9

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 S S S S S S S
Less than 50 lbs S S S S S S 31.6
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

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

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 30.6
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 30.6
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more

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

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 19.1 36.7 S S 11.0
Less than 50 lbs 23.9 8.3 28.1 9.0 34.9 11.1 10.5
50 to 99 lbs S S S S S S 28.7
100 to 499 lbs 32.1 6.5 S S S S 19.6
500 to 749 lbs S S S S S S 28.8
750 to 999 lbs S S S S S S 34.5
1,000 to 9,999 lbs 45.0 2.3 49.2 8.1 S S 27.7
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

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 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
10,000 to 49,999 lbs S S S
50,000 to 99,999 lbs S S S
100,000 lbs or more 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 13.8 24.6 32.4 6.2
Less than 50 lbs 18.4 3.9 37.5 4.9 35.6 6.0 6.8
50 to 99 lbs 9.0 1.6 16.5 2.1 22.7 2.8 7.2
100 to 499 lbs 19.3 2.9 19.3 4.5 21.8 6.0 10.3
500 to 749 lbs 33.5 0.4 S S S S 20.7
750 to 999 lbs S S S S 49.1 0.2 S
1,000 to 9,999 lbs S S S S S S 47.4
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

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 13.8 24.7 32.5 6.2
Less than 50 lbs 18.4 3.9 37.6 4.9 35.6 6.0 6.8
50 to 99 lbs 9.0 1.6 16.6 2.1 22.7 2.9 7.2
100 to 499 lbs 19.3 2.9 19.3 4.6 21.8 6.1 10.3
500 to 749 lbs 33.6 0.4 S S S S 20.4
750 to 999 lbs S S S S 49.2 0.2 S
1,000 to 9,999 lbs S S S S S S 41.1
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 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

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 S
Less than 50 lbs S S S S S S 31.6
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs S S S S S S 31.6
500 to 749 lbs
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs
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 29.8
Less than 50 lbs
50 to 99 lbs
100 to 499 lbs
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

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 38.7 S S S S 39.2
Less than 50 lbs 31.3 5.9 30.8 2.0 39.6 4.2 47.5
50 to 99 lbs S S S S S S S
100 to 499 lbs 33.9 3.4 48.8 2.5 S S 40.5
500 to 749 lbs 38.6 0.9 S S S S 23.7
750 to 999 lbs 42.1 1.5 S S 46.5 1.1 S
1,000 to 9,999 lbs S S 49.8 5.9 S S 23.9
10,000 to 49,999 lbs S S 44.8 8.7 S S S
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more S S S S S S 39.6

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, Individual State Data, December 2004.