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

Monday, July 2, 2012

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]

Excel | CSV

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 6.6 – 16.3 – 14.2 – 15.0
Less than 50 lbs 10.3 1.4 14.3 – 27.2 0.1 14.5
50 to 99 lbs 16.5 0.4 20.5 – 17.2 – 21.2
100 to 499 lbs 16.8 1.2 23.7 – 16.5 0.1 23.0
500 to 749 lbs 31.2 0.7 20.6 – 13.9 – 15.2
750 to 999 lbs 24.4 0.3 17.4 – 11.8 – 17.6
1,000 to 9,999 lbs 17.9 2.2 31.4 1.5 8.5 0.6 39.4
10,000 to 49,999 lbs 10.4 3.2 21.4 3.1 9.2 4.3 11.7
50,000 to 99,999 lbs 14.4 1.2 19.3 3.0 16.3 3.2 18.8
100,000 lbs or more 19.4 1.5 18.6 3.3 27.3 6.6 14.7

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 7.3 – 15.9 – 14.4 – 16.8
Less than 50 lbs 14.9 0.9 12.5 – 27.0 – 17.9
50 to 99 lbs 14.5 0.2 18.8 – 18.4 – 27.0
100 to 499 lbs 20.9 1.3 26.4 – 19.1 – 25.9
500 to 749 lbs 34.2 0.9 22.6 – 14.7 – 24.9
750 to 999 lbs 25.5 0.3 18.2 – 14.4 – 19.9
1,000 to 9,999 lbs 12.1 1.9 32.4 1.5 8.5 0.6 39.7
10,000 to 49,999 lbs 10.6 2.9 22.0 3.1 8.9 4.4 13.6
50,000 to 99,999 lbs 14.4 1.4 19.4 3.1 16.1 3.2 18.9
100,000 lbs or more 20.8 1.8 19.1 3.5 27.9 6.6 13.8

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 6.4 – 18.7 – 8.9 – 14.9
Less than 50 lbs 26.1 1.0 11.1 – 42.2 – 38.4
50 to 99 lbs 17.0 0.2 19.8 – 22.5 – 25.0
100 to 499 lbs 19.3 0.9 26.3 0.1 18.8 0.1 28.0
500 to 749 lbs 34.6 0.9 22.5 – 14.0 – 25.2
750 to 999 lbs 25.6 0.5 18.2 – 14.5 – 19.8
1,000 to 9,999 lbs 9.9 1.8 32.4 1.6 8.4 0.7 39.8
10,000 to 49,999 lbs 9.2 3.0 22.1 3.7 9.0 4.6 13.6
50,000 to 99,999 lbs 16.1 1.6 19.5 3.0 16.4 3.6 19.2
100,000 lbs or more 41.2 0.8 36.6 1.5 S S 24.0

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 8.5 – 14.3 – 10.1 – 10.9
Less than 50 lbs 37.4 0.3 32.2 – S S 17.7
50 to 99 lbs 32.5 0.1 26.6 – 30.7 – 13.8
100 to 499 lbs 21.8 0.8 17.1 – 18.3 0.1 10.8
500 to 749 lbs S S 11.2 – 12.6 – 9.1
750 to 999 lbs 42.8 0.6 19.2 – 23.7 – 13.4
1,000 to 9,999 lbs 16.0 2.3 10.5 0.3 9.5 0.7 6.0
10,000 to 49,999 lbs 10.9 3.1 9.7 5.1 8.8 5.0 10.5
50,000 to 99,999 lbs 18.4 2.3 21.8 4.9 17.4 3.8 19.5
100,000 lbs or more S S S S S S 17.9

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 10.1 – 26.3 – 17.0 – 11.7
Less than 50 lbs 35.0 3.4 11.8 – 24.4 – 28.7
50 to 99 lbs 16.0 0.5 20.2 – 27.8 – 35.7
100 to 499 lbs 22.8 1.6 29.5 0.2 42.8 0.2 11.5
500 to 749 lbs 20.0 0.7 24.7 0.1 34.2 – 15.2
750 to 999 lbs 14.1 0.5 22.1 – 14.3 0.1 13.2
1,000 to 9,999 lbs 12.2 3.8 39.6 3.4 18.3 2.2 27.9
10,000 to 49,999 lbs 24.0 6.8 41.6 5.2 17.1 3.9 29.5
50,000 to 99,999 lbs 28.4 1.4 22.1 4.0 41.1 4.6 20.1
100,000 lbs or more S S 27.6 2.7 34.6 3.0 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 23.6 – 21.6 – 25.2 – 11.6
Less than 50 lbs S S S S S S 29.8
50 to 99 lbs – – – – – – –
100 to 499 lbs – – – – – – –
500 to 749 lbs – – – – – – –
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs S S 43.3 – S S 29.1
10,000 to 49,999 lbs S S 36.5 0.5 34.0 1.2 15.4
50,000 to 99,999 lbs 40.9 4.5 48.1 1.4 42.2 2.0 23.9
100,000 lbs or more 21.1 7.1 22.0 1.7 26.0 2.8 14.3

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 27.9
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 27.9

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 27.9
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 27.9

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 – – – – – – –
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 – – – – – – –

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 25.1 – 34.5 – 31.2 – 5.6
Less than 50 lbs 22.9 8.9 37.1 3.8 34.1 4.1 5.4
50 to 99 lbs 37.6 2.9 25.1 4.0 24.3 4.2 8.4
100 to 499 lbs S S 40.3 4.9 37.1 4.4 9.3
500 to 749 lbs S S S S S S 26.6
750 to 999 lbs S S S S S S 28.3
1,000 to 9,999 lbs S S S S S S 19.2
10,000 to 49,999 lbs S S S S S S 30.0
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 S 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
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 S 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 10.4 – S S S S 14.4
Less than 50 lbs 10.7 4.3 22.8 8.2 32.1 8.7 14.6
50 to 99 lbs 27.5 3.2 44.9 3.0 23.1 3.2 31.6
100 to 499 lbs 22.5 2.1 23.4 6.0 21.7 5.7 12.3
500 to 749 lbs 37.3 0.1 S S 43.2 0.3 43.8
750 to 999 lbs 40.1 0.2 38.7 0.8 28.1 0.5 S
1,000 to 9,999 lbs S S S S S S 34.2
10,000 to 49,999 lbs S S S S S S 20.4
50,000 to 99,999 lbs S S S S S S 27.9
100,000 lbs or more S S S S S S 26.1

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 10.3 – 20.6 – 23.5 – 14.5
Less than 50 lbs 10.7 4.5 22.8 4.6 32.1 6.7 14.6
50 to 99 lbs 27.5 3.5 44.9 5.8 23.1 2.7 31.6
100 to 499 lbs 22.5 2.1 23.4 3.5 21.7 4.2 12.3
500 to 749 lbs 37.3 0.1 S S 43.2 0.6 43.8
750 to 999 lbs 43.5 0.2 43.4 0.8 44.6 2.3 21.5
1,000 to 9,999 lbs – – – – – – –
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 38.0
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 S S S S S S 29.9
10,000 to 49,999 lbs S S S S S S 20.6
50,000 to 99,999 lbs S S S S S S 27.9
100,000 lbs or more S S S S S S 26.1

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 26.7
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 S S S S S S 28.3
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 32.1
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 S S S S S S 31.6
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 31.8 – 24.4 – 26.8 – 42.1
Less than 50 lbs 32.7 3.9 26.6 0.6 29.0 0.4 S
50 to 99 lbs 30.6 1.0 32.6 0.6 48.2 0.1 31.0
100 to 499 lbs 44.1 3.1 38.1 0.6 50.0 0.3 35.3
500 to 749 lbs S S 41.4 0.4 S S 34.8
750 to 999 lbs 33.0 – S S S S S
1,000 to 9,999 lbs S S 31.1 4.7 27.9 3.4 S
10,000 to 49,999 lbs S S 34.9 7.7 35.0 9.8 34.3
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more S S S S S S 31.3

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.