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]
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 | 3.4 | – | 8.0 | – | 24.7 | – | 32.0 |
| Less than 50 lbs | 21.2 | 1.8 | 46.0 | – | 18.1 | – | S |
| 50 to 99 lbs | 29.3 | 0.7 | 25.7 | – | 24.4 | – | 22.6 |
| 100 to 499 lbs | 12.6 | 1.1 | 19.6 | – | 17.7 | – | 9.2 |
| 500 to 749 lbs | 11.4 | 0.2 | 15.2 | – | 21.7 | – | 15.0 |
| 750 to 999 lbs | 7.8 | 0.2 | 11.9 | – | 13.8 | – | 13.0 |
| 1,000 to 9,999 lbs | 10.7 | 1.8 | 16.0 | 0.6 | 14.7 | 0.3 | 21.0 |
| 10,000 to 49,999 lbs | 10.8 | 2.2 | 13.1 | 0.8 | 21.4 | 3.1 | 11.7 |
| 50,000 to 99,999 lbs | 11.7 | 1.5 | 12.5 | 1.4 | 21.0 | 1.8 | 10.6 |
| 100,000 lbs or more | 13.6 | 2.8 | 9.8 | 1.6 | 26.5 | 5.0 | 7.1 |
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 | 3.7 | – | 14.2 | – | 26.1 | – | 43.8 |
| Less than 50 lbs | S | S | S | S | 38.4 | – | S |
| 50 to 99 lbs | 43.5 | 0.8 | 30.8 | – | 24.5 | – | 21.1 |
| 100 to 499 lbs | 12.5 | 1.0 | 19.7 | – | 18.0 | – | 9.1 |
| 500 to 749 lbs | 10.6 | 0.3 | 14.5 | – | 22.6 | – | 16.3 |
| 750 to 999 lbs | 8.5 | 0.2 | 11.6 | – | 14.8 | – | 13.2 |
| 1,000 to 9,999 lbs | 9.9 | 2.1 | 16.4 | 0.6 | 14.9 | 0.3 | 20.8 |
| 10,000 to 49,999 lbs | 10.9 | 2.4 | 13.1 | 2.2 | 21.8 | 3.3 | 12.0 |
| 50,000 to 99,999 lbs | 11.6 | 1.7 | 12.4 | 3.4 | 21.0 | 2.0 | 10.6 |
| 100,000 lbs or more | 14.5 | 3.1 | 19.4 | 5.5 | 28.0 | 5.5 | 6.4 |
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 | 5.8 | – | 13.2 | – | 13.0 | – | 38.5 |
| Less than 50 lbs | S | S | S | S | 41.7 | – | S |
| 50 to 99 lbs | 19.9 | 0.3 | 31.0 | – | 26.0 | – | 21.4 |
| 100 to 499 lbs | 10.5 | 0.8 | 19.7 | 0.3 | 16.8 | 0.2 | 6.3 |
| 500 to 749 lbs | 10.6 | 0.3 | 14.5 | 0.1 | 22.6 | 0.1 | 16.3 |
| 750 to 999 lbs | 8.6 | 0.2 | 11.6 | 0.1 | 14.8 | – | 13.2 |
| 1,000 to 9,999 lbs | 9.9 | 2.5 | 16.4 | 2.4 | 14.9 | 0.9 | 20.8 |
| 10,000 to 49,999 lbs | 11.0 | 2.3 | 13.0 | 3.8 | 21.0 | 4.8 | 11.7 |
| 50,000 to 99,999 lbs | 12.0 | 2.1 | 11.3 | 3.7 | 11.4 | 4.3 | 9.5 |
| 100,000 lbs or more | 28.8 | 0.8 | S | S | 39.1 | 1.2 | 48.9 |
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 | 11.2 | – | 14.9 | – | 18.1 | – | 12.3 |
| Less than 50 lbs | 26.2 | 0.3 | 21.7 | – | 33.3 | – | 21.9 |
| 50 to 99 lbs | 34.1 | 0.3 | 24.0 | – | 31.1 | – | 24.1 |
| 100 to 499 lbs | 16.3 | 1.9 | 23.4 | 0.1 | 22.4 | 0.1 | 21.2 |
| 500 to 749 lbs | 26.4 | 0.7 | 30.0 | – | 27.7 | – | 31.7 |
| 750 to 999 lbs | 24.4 | 0.6 | 23.4 | – | 24.3 | – | 34.8 |
| 1,000 to 9,999 lbs | 14.5 | 3.0 | 33.3 | 0.7 | 30.8 | 0.4 | 25.1 |
| 10,000 to 49,999 lbs | 18.4 | 2.6 | 23.6 | 4.6 | 26.7 | 5.3 | 12.8 |
| 50,000 to 99,999 lbs | 17.0 | 2.9 | 13.7 | 5.0 | 17.1 | 5.1 | 18.2 |
| 100,000 lbs or more | 44.0 | 1.5 | S | S | 41.4 | 1.4 | S |
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 | 7.3 | – | 17.7 | – | 13.3 | – | 28.8 |
| Less than 50 lbs | S | S | S | S | S | S | 44.0 |
| 50 to 99 lbs | 22.8 | 0.4 | 32.9 | – | 30.7 | – | 22.1 |
| 100 to 499 lbs | 10.4 | 1.1 | 21.3 | 0.4 | 18.5 | 0.4 | 8.1 |
| 500 to 749 lbs | 13.1 | 0.4 | 15.0 | 0.2 | 22.9 | 0.2 | 17.5 |
| 750 to 999 lbs | 14.9 | 0.5 | 11.7 | 0.2 | 19.8 | 0.2 | 15.4 |
| 1,000 to 9,999 lbs | 10.3 | 3.2 | 17.3 | 4.1 | 14.1 | 3.1 | 18.9 |
| 10,000 to 49,999 lbs | 11.3 | 2.6 | 14.3 | 3.5 | 19.8 | 4.1 | 13.6 |
| 50,000 to 99,999 lbs | 21.9 | 2.7 | 20.0 | 4.0 | 14.8 | 3.3 | 30.5 |
| 100,000 lbs or more | 35.8 | 0.9 | S | S | S | S | 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 | 11.3 | – | 22.2 | – | 27.9 | – | 5.6 |
| Less than 50 lbs | – | – | – | – | – | – | – |
| 50 to 99 lbs | – | – | – | – | – | – | – |
| 100 to 499 lbs | – | – | – | – | – | – | – |
| 500 to 749 lbs | – | – | – | – | – | – | – |
| 750 to 999 lbs | S | S | S | S | S | S | 31.6 |
| 1,000 to 9,999 lbs | S | S | S | S | S | S | 37.5 |
| 10,000 to 49,999 lbs | 46.3 | 0.1 | S | S | S | S | 19.9 |
| 50,000 to 99,999 lbs | 46.4 | 1.7 | S | S | S | S | 23.9 |
| 100,000 lbs or more | 10.8 | 1.7 | 22.4 | 0.6 | 28.2 | 0.7 | 6.9 |
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 | – | – | – | – | – | – | – |
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 | – | – | – | – | – | – | – |
| 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 | 40.6 | – | 46.4 | – | 46.3 | – | 20.1 |
| Less than 50 lbs | S | S | 40.5 | 10.9 | 40.9 | 11.1 | 19.5 |
| 50 to 99 lbs | S | S | 43.9 | 11.0 | S | S | 29.6 |
| 100 to 499 lbs | S | S | S | S | S | S | 26.5 |
| 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 | S | S | S | S | S | S | 27.9 |
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 | S | S | S | S |
| 500 to 749 lbs | S | S | S | S | 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 |
| 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 | 17.4 | – | S | S | S | S | 14.1 |
| Less than 50 lbs | 16.6 | 3.4 | 18.2 | 9.1 | 15.5 | 6.3 | 14.3 |
| 50 to 99 lbs | 21.6 | 1.6 | 31.7 | 2.7 | 32.7 | 3.4 | 21.5 |
| 100 to 499 lbs | 38.7 | 2.2 | 37.8 | 4.4 | 30.9 | 3.5 | 32.2 |
| 500 to 749 lbs | S | S | 46.4 | 2.2 | 49.9 | 1.3 | 40.0 |
| 750 to 999 lbs | S | S | S | S | S | S | 27.4 |
| 1,000 to 9,999 lbs | S | S | 43.9 | 1.1 | S | S | S |
| 10,000 to 49,999 lbs | S | S | 35.1 | 7.0 | 33.5 | 13.3 | 26.8 |
| 50,000 to 99,999 lbs | – | – | – | – | – | – | – |
| 100,000 lbs or more | S | S | S | S | S | S | 31.8 |
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 | – | 27.3 | – | 19.5 | – | 14.1 |
| Less than 50 lbs | 16.6 | 3.7 | 18.3 | 5.8 | 15.5 | 7.9 | 14.3 |
| 50 to 99 lbs | 21.6 | 1.8 | 31.7 | 3.7 | 32.7 | 4.5 | 21.5 |
| 100 to 499 lbs | 38.7 | 2.2 | 37.9 | 3.6 | 30.9 | 4.3 | 32.0 |
| 500 to 749 lbs | S | S | 47.4 | 3.1 | 49.9 | 2.4 | 39.9 |
| 750 to 999 lbs | S | S | S | S | S | S | 27.4 |
| 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 | S | S | 38.7 | – | 48.7 | – | 22.7 |
| 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 | – | – | – | – | – | – | – |
| 10,000 to 49,999 lbs | S | S | 39.1 | 15.7 | 40.8 | 16.2 | 26.0 |
| 50,000 to 99,999 lbs | – | – | – | – | – | – | – |
| 100,000 lbs or more | S | S | 43.7 | 15.7 | S | S | 34.2 |
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 | 29.8 |
| 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 | – | – | – | – | – | – | – |
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 | S | S | S | S | S | S | 29.8 |
| 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 | 29.8 |
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 | 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 | – | – | – | – | – | – | – |
| 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 | 14.9 | – | S | S | 45.8 | – | 49.3 |
| Less than 50 lbs | 33.1 | 6.7 | 31.6 | 5.1 | 44.0 | 0.9 | 37.2 |
| 50 to 99 lbs | 47.2 | 2.1 | 37.0 | 1.4 | 27.3 | 0.3 | S |
| 100 to 499 lbs | 32.0 | 4.6 | 39.3 | 3.0 | S | S | S |
| 500 to 749 lbs | S | S | S | S | S | S | 34.1 |
| 750 to 999 lbs | S | S | S | S | S | S | 33.0 |
| 1,000 to 9,999 lbs | S | S | S | S | 23.5 | 12.8 | S |
| 10,000 to 49,999 lbs | S | S | S | S | S | S | 28.5 |
| 50,000 to 99,999 lbs | S | S | S | S | S | S | 30.0 |
| 100,000 lbs or more | 47.6 | 9.1 | S | S | S | S | 32.4 |
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.