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 19.6 23.8 9.2 12.0
Less than 50 lbs 12.1 2.2 9.2 22.6 0.1 14.1
50 to 99 lbs 15.7 0.8 10.9 30.5 21.9
100 to 499 lbs 16.1 1.9 15.5 0.1 13.0 0.1 14.6
500 to 749 lbs 16.3 0.6 19.1 16.8 21.2
750 to 999 lbs 13.8 0.3 15.2 14.6 25.8
1,000 to 9,999 lbs 10.4 2.1 12.0 0.5 7.4 0.6 11.6
10,000 to 49,999 lbs 15.8 2.7 S S 8.5 2.5 47.6
50,000 to 99,999 lbs 27.4 1.0 21.1 3.4 13.7 1.6 28.0
100,000 lbs or more S S 18.2 6.4 15.2 3.1 14.0

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 23.2 25.9 10.8 22.9
Less than 50 lbs 11.8 1.0 11.9 15.5 23.9
50 to 99 lbs 16.1 0.6 17.7 18.6 16.2
100 to 499 lbs 18.2 1.9 17.3 0.1 17.1 0.1 13.5
500 to 749 lbs 19.1 0.7 20.5 18.1 19.3
750 to 999 lbs 13.3 0.4 15.8 19.1 12.5
1,000 to 9,999 lbs 10.6 2.6 12.3 0.6 7.8 0.6 9.9
10,000 to 49,999 lbs 16.5 3.6 S S 10.5 2.7 S
50,000 to 99,999 lbs 28.3 1.0 22.0 4.0 15.0 1.6 23.7
100,000 lbs or more S S 21.3 6.7 16.8 3.5 14.7

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 7.7 36.8 8.5 10.6
Less than 50 lbs 12.8 0.9 12.1 17.2 18.6
50 to 99 lbs 20.2 0.6 18.2 22.8 19.2
100 to 499 lbs 17.3 1.5 17.4 0.4 19.1 0.3 9.5
500 to 749 lbs 19.9 0.6 20.9 0.2 19.7 0.1 14.8
750 to 999 lbs 12.6 0.3 15.8 0.1 19.4 0.1 13.2
1,000 to 9,999 lbs 10.2 1.6 12.4 1.5 8.7 1.0 10.6
10,000 to 49,999 lbs 16.6 3.2 S S 10.2 3.0 S
50,000 to 99,999 lbs 28.9 3.0 22.1 4.4 15.4 2.6 24.1
100,000 lbs or more 30.7 1.6 17.2 3.0 28.5 1.9 30.8

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 5.5 9.2 8.0 14.6
Less than 50 lbs 28.8 0.7 34.8 27.7 42.9
50 to 99 lbs 34.0 0.6 16.7 40.5 23.1
100 to 499 lbs 14.1 1.0 32.6 0.4 22.6 0.3 16.5
500 to 749 lbs 21.0 0.6 24.7 0.1 24.8 0.2 18.0
750 to 999 lbs 22.2 0.5 18.3 28.6 0.1 20.1
1,000 to 9,999 lbs 10.0 2.5 13.7 1.2 11.1 1.1 14.2
10,000 to 49,999 lbs 7.9 2.0 12.0 4.6 9.4 2.9 15.2
50,000 to 99,999 lbs 11.2 1.2 19.0 4.6 18.7 2.8 21.5
100,000 lbs or more 32.1 0.8 30.3 3.3 33.8 2.3 42.3

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 14.3 48.9 14.8 11.9
Less than 50 lbs 17.9 1.7 12.6 25.2 17.4
50 to 99 lbs 18.3 0.7 20.4 18.2 25.2
100 to 499 lbs 22.8 2.4 16.5 0.5 15.1 0.4 9.7
500 to 749 lbs 23.0 0.9 23.6 0.3 18.2 0.3 19.4
750 to 999 lbs 17.0 0.5 17.7 0.2 18.5 0.4 20.8
1,000 to 9,999 lbs 16.6 1.8 17.6 2.2 13.3 2.3 13.6
10,000 to 49,999 lbs 32.3 4.7 S S 25.4 5.1 S
50,000 to 99,999 lbs 46.0 4.8 31.1 5.2 18.8 4.2 29.9
100,000 lbs or more 37.3 2.8 25.3 4.8 42.2 3.6 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 17.9 25.9 25.6 8.3
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
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs S S S S S S 31.6
1,000 to 9,999 lbs 41.6 43.2 43.4 19.5
10,000 to 49,999 lbs 21.2 1.8 22.9 0.9 33.1 1.2 12.4
50,000 to 99,999 lbs 24.9 0.4 26.0 0.5 26.4 0.4 20.6
100,000 lbs or more 19.3 2.0 26.3 1.3 26.1 1.2 8.7

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 40.9 S S 47.1 16.7
Less than 50 lbs S S S S S S 27.2
50 to 99 lbs S S S S S S 30.4
100 to 499 lbs S S S S S S 32.6
500 to 749 lbs S S S S S S 30.4
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 22.9
10,000 to 49,999 lbs 42.0 1.8 S S S S 48.8
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more 45.8 7.9 S S 48.6 4.9 39.4

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 15.9
Less than 50 lbs
50 to 99 lbs
100 to 499 lbs S S S S S S 31.6
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs
1,000 to 9,999 lbs
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 31.6
100,000 lbs or more S S S S S S 28.6

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 34.9 S S 41.9 15.9
Less than 50 lbs S S S S S S 27.2
50 to 99 lbs S S S S S S 30.4
100 to 499 lbs S S S S S S 26.6
500 to 749 lbs S S S S S S 26.9
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 22.9
10,000 to 49,999 lbs 42.0 3.3 41.8 1.9 S S 34.7
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more S S S S 48.8 18.7 25.0

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 S S 37.3 S S 4.8
Less than 50 lbs 30.7 10.1 26.0 6.9 27.5 6.3 4.8
50 to 99 lbs 34.6 4.3 40.7 5.6 49.2 5.9 9.9
100 to 499 lbs 38.7 9.3 31.9 5.6 33.8 5.5 8.0
500 to 749 lbs S S 35.0 1.6 36.7 1.9 22.9
750 to 999 lbs S S 32.3 2.3 41.9 1.5 25.2
1,000 to 9,999 lbs 49.0 5.6 41.0 7.2 48.3 10.1 25.1
10,000 to 49,999 lbs 49.0 1.6 S S S S 28.1
50,000 to 99,999 lbs S S S S S S 35.7
100,000 lbs or more S S S S S S 29.8

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 9.0 11.7 S S S
Less than 50 lbs S S S S 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 9.0 11.7 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 17.7 16.3 18.8 9.9
Less than 50 lbs 18.0 3.4 18.0 1.5 26.7 1.0 10.6
50 to 99 lbs 25.4 1.6 25.6 0.7 41.1 0.7 14.9
100 to 499 lbs 25.9 2.5 22.8 2.2 23.7 1.4 18.6
500 to 749 lbs 42.0 0.4 42.3 1.0 48.7 0.8 22.7
750 to 999 lbs 36.5 0.2 47.6 0.2 S S 21.5
1,000 to 9,999 lbs 28.9 0.4 42.4 1.4 41.9 1.7 10.7
10,000 to 49,999 lbs 36.7 1.0 35.1 7.0 34.3 7.6 5.9
50,000 to 99,999 lbs 40.2 0.1 34.9 2.3 40.4 2.9 10.1
100,000 lbs or more 20.9 0.4 28.9 6.4 30.5 6.6 5.0

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 18.3 19.7 26.6 10.2
Less than 50 lbs 18.0 3.6 18.0 4.3 27.0 7.7 10.6
50 to 99 lbs 25.4 1.9 25.9 2.1 41.8 2.5 15.3
100 to 499 lbs 26.5 2.7 24.9 4.4 28.8 5.3 20.4
500 to 749 lbs 44.7 0.5 45.4 2.4 S S 23.5
750 to 999 lbs S S 33.3 0.2 39.8 0.3 35.8
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

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 31.6 23.5 22.3 4.7
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 29.9
10,000 to 49,999 lbs 47.3 11.0 S S 47.6 11.9 4.9
50,000 to 99,999 lbs S S 47.0 1.5 S S 24.1
100,000 lbs or more 18.3 10.2 30.3 11.0 31.7 11.1 7.4

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 27.1 32.9 35.9 6.1
Less than 50 lbs S S 47.8 0.2 49.3 0.1 24.2
50 to 99 lbs S S S S S S 30.6
100 to 499 lbs 43.1 4.4 S S S S 12.6
500 to 749 lbs S S S S S S 23.7
750 to 999 lbs 49.5 3.0 S S S S 25.8
1,000 to 9,999 lbs 36.7 7.9 45.6 3.1 43.0 2.8 7.0
10,000 to 49,999 lbs 30.4 7.0 37.9 8.0 42.8 9.4 14.5
50,000 to 99,999 lbs S S 45.3 8.7 46.4 10.1 15.2
100,000 lbs or more S S S S S S 31.6

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 49.0
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 S S S S S S 33.8
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

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 27.8 27.1 17.8 S
Less than 50 lbs S S 27.9 0.1 S S S
50 to 99 lbs 40.0 1.1 33.8 S S 40.1
100 to 499 lbs S S 25.5 0.1 S S S
500 to 749 lbs 31.4 0.5 31.2 S S S
750 to 999 lbs 36.7 0.5 S S 46.4 S
1,000 to 9,999 lbs S S 21.1 1.2 18.8 2.1 15.7
10,000 to 49,999 lbs 33.5 2.8 16.8 4.7 36.8 7.7 33.1
50,000 to 99,999 lbs 44.0 6.2 31.5 5.1 41.5 7.7 24.3
100,000 lbs or more 23.1 6.1 32.3 8.6 25.2 8.4 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.