Bureau of Transportation Statistics (BTS)
BTS Home > Publications > Commodity Flow Survey > States > South Carolina
Printable Version

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 8.3 – 10.4 – 11.0 – 9.4
Less than 50 lbs 14.4 0.8 15.6 – 14.6 – 11.2
50 to 99 lbs 15.3 0.2 22.0 – 13.7 – 16.9
100 to 499 lbs 8.1 0.6 12.1 0.2 10.5 0.1 16.0
500 to 749 lbs 28.5 0.8 19.4 0.1 23.2 – 7.3
750 to 999 lbs 27.4 0.5 19.1 – 19.2 – 8.7
1,000 to 9,999 lbs 14.7 1.3 11.7 0.6 12.0 0.7 7.6
10,000 to 49,999 lbs 7.5 2.6 11.0 3.2 10.1 2.2 11.0
50,000 to 99,999 lbs 23.5 1.1 21.9 2.5 15.8 1.3 15.6
100,000 lbs or more 23.0 0.7 20.9 3.0 21.9 3.3 15.7

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 8.9 – 10.5 – 11.1 – 11.2
Less than 50 lbs 20.0 0.4 28.4 – 17.9 – 27.5
50 to 99 lbs 15.8 0.1 28.4 – 13.3 – 31.3
100 to 499 lbs 10.3 0.6 13.7 0.2 10.9 – 18.8
500 to 749 lbs 30.3 0.8 20.3 0.1 23.7 – 7.3
750 to 999 lbs 27.9 0.5 19.3 – 19.3 – 8.7
1,000 to 9,999 lbs 14.7 1.2 11.8 0.6 12.6 0.8 7.9
10,000 to 49,999 lbs 7.7 2.8 11.2 3.3 9.7 2.3 11.2
50,000 to 99,999 lbs 27.4 1.2 22.4 2.5 16.8 1.3 15.4
100,000 lbs or more 23.0 0.7 20.9 3.0 21.9 3.4 15.7

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 8.8 – 11.6 – 11.3 – 9.2
Less than 50 lbs 23.4 0.3 28.9 – 18.5 – 25.3
50 to 99 lbs 16.2 0.1 28.5 – 14.8 – 36.2
100 to 499 lbs 11.3 0.7 13.9 0.2 10.8 0.1 18.1
500 to 749 lbs 30.6 0.8 20.3 0.1 23.8 – 7.3
750 to 999 lbs 27.9 0.5 19.3 – 19.3 – 8.8
1,000 to 9,999 lbs 14.7 1.4 11.8 0.7 12.5 0.8 7.9
10,000 to 49,999 lbs 7.6 2.8 10.8 3.8 9.6 1.6 11.2
50,000 to 99,999 lbs 27.2 0.9 22.2 2.7 17.9 1.5 12.6
100,000 lbs or more 40.5 0.3 48.4 3.0 S S 30.1

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 10.6 – 13.6 – 14.2 – 6.0
Less than 50 lbs 20.1 0.1 19.5 – 21.6 – 9.0
50 to 99 lbs 18.1 – 24.6 – 20.9 – 17.3
100 to 499 lbs 16.3 1.1 20.1 – 15.5 0.2 5.7
500 to 749 lbs 32.8 0.5 42.9 – 29.5 0.1 13.1
750 to 999 lbs 25.0 0.3 27.7 – 22.5 – 9.8
1,000 to 9,999 lbs 19.9 1.7 22.0 0.5 16.4 0.8 8.3
10,000 to 49,999 lbs 7.9 2.7 12.8 2.3 12.0 1.8 9.8
50,000 to 99,999 lbs 17.9 0.4 23.8 3.2 18.2 1.1 18.2
100,000 lbs or more 47.3 0.4 S S S S 16.7

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 17.6 – 19.5 – 9.8 – 7.5
Less than 50 lbs 30.0 0.8 32.0 – 35.1 – 9.4
50 to 99 lbs 22.4 0.3 32.4 – 20.8 – 30.7
100 to 499 lbs 27.6 1.0 21.4 0.3 22.0 0.2 16.5
500 to 749 lbs S S 14.5 0.2 17.0 0.2 16.7
750 to 999 lbs S S 17.7 0.2 23.1 0.1 19.0
1,000 to 9,999 lbs 29.8 2.7 12.7 1.6 15.7 2.2 9.1
10,000 to 49,999 lbs 14.6 5.3 19.7 5.5 7.6 2.6 12.1
50,000 to 99,999 lbs 46.1 1.8 31.6 4.5 23.9 4.2 18.1
100,000 lbs or more 45.9 0.2 S S 45.6 2.3 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 14.9 – 21.4 – 17.6 – 13.5
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 36.6
10,000 to 49,999 lbs 48.8 3.1 S S 42.0 1.6 S
50,000 to 99,999 lbs 42.6 9.3 S S 31.7 1.2 S
100,000 lbs or more 19.0 8.5 21.2 2.1 18.1 1.8 11.2

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 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 – – – – – – –
10,000 to 49,999 lbs S S S S S S 29.9
50,000 to 99,999 lbs S S S S S S 31.1
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 – – – – – – –
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 – – – – – – –

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 S S S S S S 31.1
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 – – – – – – –
10,000 to 49,999 lbs S S S S S S 29.9
50,000 to 99,999 lbs S S S S S S 31.6
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 26.6 – 33.0 – 30.8 – 4.3
Less than 50 lbs 48.4 11.4 28.2 4.0 31.5 4.1 5.1
50 to 99 lbs S S S S S S 17.2
100 to 499 lbs 39.1 9.4 45.3 9.3 S S 11.2
500 to 749 lbs S S 41.1 2.6 47.8 3.7 21.1
750 to 999 lbs S S S S S S 20.9
1,000 to 9,999 lbs 38.2 4.1 36.9 6.7 40.1 6.7 17.7
10,000 to 49,999 lbs S S S S S S 28.1
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
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

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 14.7 – 24.7 – 25.0 – 5.1
Less than 50 lbs 17.6 4.2 17.2 7.3 17.8 8.1 5.3
50 to 99 lbs 22.4 1.6 19.2 2.4 19.6 2.9 8.2
100 to 499 lbs 28.4 3.4 16.9 3.1 21.4 3.6 6.2
500 to 749 lbs S S S S S S S
750 to 999 lbs 39.2 0.4 29.4 0.2 41.6 0.5 37.7
1,000 to 9,999 lbs S S S S S S 30.1
10,000 to 49,999 lbs S S S S 45.8 10.4 41.0
50,000 to 99,999 lbs S S S S S S 25.8
100,000 lbs or more S S S S S S 31.6

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 16.4 – 17.1 – 14.7 – 5.0
Less than 50 lbs 17.6 3.9 17.2 3.3 17.8 4.2 5.3
50 to 99 lbs 22.4 1.7 19.2 2.4 19.6 2.7 8.2
100 to 499 lbs 28.4 3.5 16.9 2.4 21.5 3.4 6.3
500 to 749 lbs S S S S S S S
750 to 999 lbs 39.2 0.5 29.4 0.7 41.6 1.1 37.7
1,000 to 9,999 lbs S S S S S S 37.5
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 27.6 – 29.4 – 29.6 – 19.3
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 30.0
10,000 to 49,999 lbs 43.4 12.9 S S 48.3 13.3 25.3
50,000 to 99,999 lbs S S S S S S 25.8
100,000 lbs or more S S S S S S 31.6

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 S S S S 49.6
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