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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 5.4 – 7.8 – 9.4 – 7.7
Less than 50 lbs 7.6 0.6 9.7 – 13.6 – 7.9
50 to 99 lbs 8.9 0.2 13.4 – 9.7 – 7.8
100 to 499 lbs 7.9 0.7 10.1 0.2 10.4 0.2 17.3
500 to 749 lbs 9.4 0.2 9.0 – 9.4 – 11.2
750 to 999 lbs 15.6 0.3 7.3 – 15.1 0.1 14.6
1,000 to 9,999 lbs 7.3 2.5 8.0 0.8 13.5 1.9 11.1
10,000 to 49,999 lbs 13.5 3.6 12.8 2.3 13.1 2.7 7.0
50,000 to 99,999 lbs 13.0 0.9 9.3 2.1 15.0 0.9 10.0
100,000 lbs or more 15.6 0.6 15.8 3.4 16.8 3.8 28.0

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 7.1 – 7.8 – 8.7 – 18.3
Less than 50 lbs 11.9 0.3 12.4 – 22.5 – 25.3
50 to 99 lbs 13.1 0.2 17.4 – 18.7 – 15.8
100 to 499 lbs 7.8 0.7 11.6 0.2 9.1 0.1 11.4
500 to 749 lbs 9.2 0.3 9.0 – 10.1 – 12.2
750 to 999 lbs 16.9 0.3 10.2 – 12.4 – 7.9
1,000 to 9,999 lbs 8.4 2.8 8.4 0.9 12.7 1.7 10.5
10,000 to 49,999 lbs 14.3 3.3 12.7 2.4 13.8 2.5 7.7
50,000 to 99,999 lbs 12.3 0.7 10.1 1.9 15.7 0.8 10.2
100,000 lbs or more 17.5 0.8 16.1 3.4 10.3 2.7 29.0

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 – 8.3 – 10.3 – 7.8
Less than 50 lbs 13.2 0.3 14.1 – 11.3 – 13.7
50 to 99 lbs 11.9 0.2 17.0 – 12.1 – 17.1
100 to 499 lbs 7.7 0.7 11.7 0.2 9.2 0.2 11.0
500 to 749 lbs 9.3 0.3 9.0 – 10.2 0.1 12.3
750 to 999 lbs 16.9 0.4 10.2 0.1 12.6 0.1 7.8
1,000 to 9,999 lbs 8.0 2.6 8.5 1.0 13.5 1.8 11.1
10,000 to 49,999 lbs 14.5 3.2 12.8 2.6 14.1 3.1 7.7
50,000 to 99,999 lbs 13.6 0.9 10.8 2.1 15.9 0.9 10.1
100,000 lbs or more 22.7 0.4 20.7 3.1 23.9 2.6 26.6

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 11.0 – 11.5 – 11.8 – 4.4
Less than 50 lbs 18.3 0.2 12.8 – 14.4 – 11.7
50 to 99 lbs 22.5 0.1 11.5 – 15.5 – 12.0
100 to 499 lbs 7.2 0.5 6.6 – 7.2 0.2 4.9
500 to 749 lbs 10.3 0.3 14.1 – 10.8 0.1 7.9
750 to 999 lbs 19.1 0.4 9.5 – 13.5 0.1 7.3
1,000 to 9,999 lbs 12.5 3.5 16.7 1.7 19.1 2.3 10.6
10,000 to 49,999 lbs 17.9 3.4 13.7 3.1 16.0 4.1 4.4
50,000 to 99,999 lbs 20.0 1.7 17.2 2.9 14.3 1.1 21.7
100,000 lbs or more 38.7 0.5 22.5 2.6 34.3 3.5 19.7

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 5.2 – 11.6 – 11.9 – 9.5
Less than 50 lbs 17.3 0.6 16.4 – 17.1 – 20.8
50 to 99 lbs 17.6 0.4 19.8 – 21.2 – 10.5
100 to 499 lbs 14.9 1.3 15.6 0.4 25.9 0.5 12.7
500 to 749 lbs 12.6 0.4 10.1 0.2 39.8 0.5 37.4
750 to 999 lbs 17.4 0.4 13.0 0.2 15.4 0.2 10.3
1,000 to 9,999 lbs 11.3 3.4 16.8 1.8 16.6 1.8 18.0
10,000 to 49,999 lbs 13.3 3.9 17.9 3.3 11.5 4.5 14.2
50,000 to 99,999 lbs 20.6 1.5 14.3 3.2 26.5 4.3 13.8
100,000 lbs or more 41.0 0.7 32.9 4.1 33.3 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 18.4 – 20.5 – 16.3 – 8.2
Less than 50 lbs – – – – – – –
50 to 99 lbs S S S S S S 27.3
100 to 499 lbs S S S S S S 28.7
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 17.9
10,000 to 49,999 lbs 19.6 3.1 14.4 1.1 13.6 1.0 15.6
50,000 to 99,999 lbs 28.9 5.4 15.8 2.2 19.1 2.4 8.9
100,000 lbs or more 14.4 7.0 22.8 4.8 19.5 5.0 9.7

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 40.8 – 29.1 – 28.5 – 28.4
Less than 50 lbs S S S S S S 31.6
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 31.6
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 40.8 0.4 29.1 – 28.5 – 11.7

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 – – – – – – –
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 – – – – – – –

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 40.6 – 30.6 – 29.4 – 15.1
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 S S S S S S 31.6
100,000 lbs or more 40.5 – 30.6 – 29.4 – 12.7

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 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 31.6
50,000 to 99,999 lbs – – – – – – –
100,000 lbs or more S S S S S S 49.4

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 28.7 – 32.6 – 31.0 – 5.0
Less than 50 lbs 23.7 7.9 36.5 5.3 35.1 5.8 5.9
50 to 99 lbs 40.6 2.6 S S S S 8.0
100 to 499 lbs 38.4 4.2 25.6 5.7 25.0 5.6 7.8
500 to 749 lbs S S 36.5 0.6 48.9 1.0 35.0
750 to 999 lbs S S S S S S 20.4
1,000 to 9,999 lbs S S 42.0 6.0 42.5 5.3 14.7
10,000 to 49,999 lbs S S 46.3 10.2 46.7 9.0 22.9
50,000 to 99,999 lbs – – – – – – –
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 44.2 – S S S S S
Less than 50 lbs – – – – S S S
50 to 99 lbs S S S S S S S
100 to 499 lbs S S S S 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 43.5 1.8 46.1 1.9 S S S
50,000 to 99,999 lbs 41.2 11.9 41.1 12.7 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 11.6 – 29.9 – 31.7 – 5.4
Less than 50 lbs 9.9 4.2 12.2 1.1 15.0 0.8 6.3
50 to 99 lbs 13.1 0.8 18.2 0.8 10.1 0.3 13.2
100 to 499 lbs 16.3 2.6 18.5 1.1 32.4 1.2 15.5
500 to 749 lbs 43.2 0.5 32.0 0.3 27.0 0.1 41.0
750 to 999 lbs S S S S S S 22.9
1,000 to 9,999 lbs 28.3 5.3 28.1 3.8 27.5 5.2 18.0
10,000 to 49,999 lbs S S 30.3 2.1 25.2 3.6 8.7
50,000 to 99,999 lbs S S 49.5 0.6 S S 29.0
100,000 lbs or more 36.1 1.2 36.0 8.6 41.2 9.6 7.0

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 7.9 – 17.1 – 17.5 – 5.4
Less than 50 lbs 9.9 4.3 12.1 4.4 15.0 4.5 6.3
50 to 99 lbs 13.1 1.9 18.2 1.9 10.2 1.9 13.2
100 to 499 lbs 16.3 3.1 18.5 3.3 32.5 4.2 15.5
500 to 749 lbs 43.3 0.8 33.1 1.7 26.9 1.5 S
750 to 999 lbs S S S S S S 10.2
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 26.7 – 22.3 – 22.5 – 7.6
Less than 50 lbs – – – – – – –
50 to 99 lbs S S S S S S 28.1
100 to 499 lbs S S S S S S 29.6
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs S S S S S S 30.0
1,000 to 9,999 lbs 28.3 13.2 28.1 9.3 27.2 8.6 18.1
10,000 to 49,999 lbs S S 34.5 6.0 30.2 5.4 9.0
50,000 to 99,999 lbs S S S S S S 32.3
100,000 lbs or more S S 48.2 7.9 S S 23.5

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 39.1 – S S S S 36.2
Less than 50 lbs S S S S S S 28.7
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs S S S S S S 31.7
500 to 749 lbs S S S S S S S
750 to 999 lbs – – – – – – –
1,000 to 9,999 lbs S S S S S S 41.7
10,000 to 49,999 lbs S S S S S S 28.3
50,000 to 99,999 lbs S S S S S S 30.8
100,000 lbs or more S S S S S S 28.8

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 39.1 – 39.7 – 45.2 – 47.9
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 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 39.5 9.0 39.7 – 45.3 0.8 12.5

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 41.8
Less than 50 lbs S S S S S S 32.5
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 30.3

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 37.9 – 40.8 – 31.3 – 41.2
Less than 50 lbs 38.6 4.2 38.0 0.3 46.7 0.1 S
50 to 99 lbs 31.2 2.0 35.9 0.2 46.2 0.2 S
100 to 499 lbs 24.0 1.3 30.9 0.9 37.6 0.2 31.1
500 to 749 lbs 36.2 0.7 36.9 0.4 33.7 – S
750 to 999 lbs 23.4 0.1 S S 29.6 – S
1,000 to 9,999 lbs 23.6 9.7 25.8 7.3 21.2 11.7 17.2
10,000 to 49,999 lbs S S 49.6 7.4 38.3 9.1 S
50,000 to 99,999 lbs S S S S S S S
100,000 lbs or more 47.5 – 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.