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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 10.2 – 17.1 – 13.7 – 13.9
Less than 50 lbs 17.0 2.9 23.1 – 26.8 0.4 12.0
50 to 99 lbs 13.2 0.5 34.5 – 19.5 0.1 32.1
100 to 499 lbs 17.8 3.2 11.1 0.3 12.9 0.5 12.4
500 to 749 lbs 14.0 0.3 11.6 0.1 12.1 – 23.2
750 to 999 lbs 17.2 0.2 16.3 – 12.2 – 15.5
1,000 to 9,999 lbs 10.9 1.4 14.7 1.4 13.2 1.2 10.9
10,000 to 49,999 lbs 30.6 5.3 32.5 5.7 26.9 6.1 12.3
50,000 to 99,999 lbs 16.8 1.0 16.5 3.2 21.8 1.7 17.7
100,000 lbs or more 22.0 0.9 20.6 5.5 24.3 6.6 17.1

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 11.8 – 16.5 – 14.1 – 17.1
Less than 50 lbs 17.5 2.2 37.6 – 32.4 0.1 17.4
50 to 99 lbs 15.7 0.4 42.2 – 28.0 – 46.6
100 to 499 lbs 20.8 4.1 11.9 0.3 14.0 0.4 14.7
500 to 749 lbs 13.9 0.4 12.1 0.1 13.1 – 27.2
750 to 999 lbs 16.3 0.2 16.6 – 9.9 – 18.8
1,000 to 9,999 lbs 10.8 1.8 13.3 1.4 13.0 1.2 11.5
10,000 to 49,999 lbs 30.9 5.3 31.4 5.7 27.2 6.2 11.3
50,000 to 99,999 lbs 16.8 1.2 16.5 3.3 21.9 1.8 17.7
100,000 lbs or more 25.4 1.1 21.1 5.6 24.8 6.9 17.8

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 15.8 – 22.1 – 21.0 – 16.1
Less than 50 lbs 15.8 1.4 39.7 – 38.0 – 27.0
50 to 99 lbs 17.1 0.3 44.0 – 16.8 – 35.4
100 to 499 lbs 17.1 1.7 11.7 0.5 18.6 0.8 20.6
500 to 749 lbs 15.4 0.5 12.9 0.2 13.3 0.1 25.9
750 to 999 lbs 14.5 0.3 16.6 0.1 10.3 0.1 18.8
1,000 to 9,999 lbs 10.8 1.8 11.0 2.4 13.4 1.9 9.1
10,000 to 49,999 lbs 31.0 5.0 31.4 5.2 27.2 4.8 11.2
50,000 to 99,999 lbs 16.9 1.4 16.6 4.3 22.6 3.4 18.2
100,000 lbs or more S S S S S S 34.2

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 27.8 – 36.1 – 24.6 – 19.1
Less than 50 lbs 26.8 2.2 30.9 – 44.9 – 13.5
50 to 99 lbs 28.1 0.6 20.1 – 20.1 – 11.3
100 to 499 lbs 19.5 3.5 21.9 0.4 25.2 1.0 17.7
500 to 749 lbs 14.4 0.3 15.5 – 20.6 0.1 14.5
750 to 999 lbs 29.9 0.3 18.8 – 16.7 0.1 11.5
1,000 to 9,999 lbs 21.9 1.9 42.0 1.5 21.0 1.4 23.6
10,000 to 49,999 lbs 45.1 6.2 S S 32.1 5.4 28.4
50,000 to 99,999 lbs 17.3 1.1 19.1 6.2 22.3 3.7 20.7
100,000 lbs or more S S S S S S 30.9

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 11.8 – 25.3 – 23.0 – 17.1
Less than 50 lbs 23.7 1.4 44.0 0.3 11.3 – 28.5
50 to 99 lbs 27.2 1.2 45.8 0.5 24.8 0.1 36.7
100 to 499 lbs 19.8 1.7 13.7 0.8 17.2 0.6 13.1
500 to 749 lbs 21.8 0.8 13.4 0.4 20.5 0.5 37.8
750 to 999 lbs 12.9 0.3 18.1 0.2 14.5 0.3 15.2
1,000 to 9,999 lbs 11.6 2.8 9.8 3.0 8.7 2.7 7.4
10,000 to 49,999 lbs 21.9 3.9 26.3 3.3 24.6 3.6 10.2
50,000 to 99,999 lbs 23.7 2.6 16.9 3.8 38.0 3.3 18.8
100,000 lbs or more S S S S S S 43.1

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 26.5 – 32.9 – 22.0 – S
Less than 50 lbs S S S S S S S
50 to 99 lbs S S S S S S S
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 S S S S S S 31.6
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 46.1
100,000 lbs or more 27.2 3.5 32.0 2.2 22.1 0.3 7.3

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 31.6
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 – – – – – – –

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 31.6
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 – – – – – – –

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 22.4 – 49.5 – S S 5.0
Less than 50 lbs 28.6 10.9 45.1 4.6 47.9 5.3 5.8
50 to 99 lbs 34.2 1.1 S S S S 8.5
100 to 499 lbs 36.9 11.4 37.9 8.8 39.0 10.5 6.5
500 to 749 lbs S S 38.2 1.9 38.0 1.9 23.3
750 to 999 lbs S S S S S S 30.0
1,000 to 9,999 lbs 39.1 0.9 35.8 9.2 48.5 9.3 19.7
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 31.6
100,000 lbs or more S S S S S S 31.6

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
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 16.2 – 23.7 – 15.9 – 4.7
Less than 50 lbs 18.3 3.6 30.0 6.6 33.6 7.8 4.9
50 to 99 lbs 23.4 2.6 27.3 3.1 25.8 2.1 17.4
100 to 499 lbs 31.5 3.1 33.1 6.2 23.0 5.0 12.0
500 to 749 lbs 46.4 0.5 46.7 1.3 45.1 0.4 S
750 to 999 lbs S S S S S S S
1,000 to 9,999 lbs 38.5 – 41.6 0.8 45.0 1.7 27.8
10,000 to 49,999 lbs S S S S S S 24.1
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S S S S S 35.6

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 16.7 – 24.4 – 22.5 – 4.7
Less than 50 lbs 18.4 3.7 30.1 4.7 33.7 6.6 4.9
50 to 99 lbs 23.4 2.9 27.3 2.8 25.8 2.7 17.4
100 to 499 lbs 31.5 3.1 33.2 5.7 23.2 6.8 11.9
500 to 749 lbs 46.6 0.5 47.6 2.1 44.2 0.4 S
750 to 999 lbs S S S S S S S
1,000 to 9,999 lbs S S S S S S 29.8
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 42.8 – 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 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 S S S S S S 35.6

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 35.1 – 34.8 – 18.3
Less than 50 lbs S S S S S S 29.8
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 S S S S S S 31.6
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs 49.0 9.7 48.7 9.4 49.0 9.4 25.8
10,000 to 49,999 lbs 48.3 11.2 41.7 10.2 41.5 10.2 23.6
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 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 – – – – – – –

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 40.3 – S S 26.2 – S
Less than 50 lbs 41.6 7.2 31.2 0.8 S S 49.0
50 to 99 lbs 28.5 1.2 35.1 0.4 33.7 0.2 S
100 to 499 lbs 35.8 2.7 40.8 2.6 S S S
500 to 749 lbs 39.2 0.5 41.1 0.6 S S S
750 to 999 lbs S S S S S S 29.8
1,000 to 9,999 lbs 34.4 5.9 S S 31.2 10.4 S
10,000 to 49,999 lbs S S S S 36.0 8.6 S
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more 40.0 9.3 35.5 7.8 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.