Table B-9a. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by For-Hire Truck for Selected UN Numbers: 2002
Monday, July 2, 2012
Table B-9a. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by For-Hire Truck for Selected UN Numbers: 2002
[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]
| UN number | Description | 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 | |||
| Total | 5.2 | – | 6.2 | – | 9.4 | – | 7.4 | |
| 1005 | Ammonia, anhydrous | 48.1 | 0.2 | 46.8 | 0.5 | 49.2 | 0.6 | S |
| 1075 | Petroleum gases | 37.9 | 0.8 | 35.7 | 1.1 | S | S | 19.0 |
| 1202 | Gas oil, diesel fuel, heating oil, light | 9.5 | 0.2 | 10.4 | 0.4 | S | S | 49.2 |
| 1203 | Gasoline | 7.5 | 2.4 | 9.7 | 2.8 | 21.9 | 4.1 | 21.6 |
| 1263 | Paint including paint, lacquer, enamel, stain | 47.6 | 3.0 | 26.6 | 0.3 | 25.5 | 1.1 | 13.5 |
| 1268 | Petroleum distillates, n.o.s. | 31.3 | 0.4 | 41.1 | 0.4 | 21.1 | 0.2 | 27.3 |
| 1760 | Corrosive liquids, n.o.s. | 32.8 | 0.4 | 40.2 | 0.3 | 38.2 | 0.7 | 24.0 |
| 1824 | Sodium hydroxide solution | 41.9 | 0.3 | 17.9 | 0.2 | 30.8 | 0.9 | 15.8 |
| 1830 | Sulfuric acid | 43.3 | 0.1 | 16.9 | 0.2 | 33.0 | 0.5 | 16.1 |
| 1863 | Fuel, aviation, turbine engine | 15.4 | 0.1 | 16.0 | 0.2 | 35.4 | 0.2 | 17.7 |
| 1942 | Ammonium nitrate, with not more than 0.2% total | S | S | S | S | S | S | 17.3 |
| 1987 | Alcohols, n.o.s. | 15.5 | 0.2 | 14.8 | 0.1 | 17.6 | 0.2 | 27.6 |
| 1993 | Flammable liquids, n.o.s. | 7.9 | 0.7 | 7.2 | 0.9 | 31.8 | 2.4 | 28.2 |
| 1999 | Tars, liquid | 49.0 | 0.2 | 43.1 | 0.5 | S | S | 20.9 |
| 2448 | Sulfur, molten | 24.7 | – | 15.2 | 0.1 | 15.6 | – | 13.4 |
| 2794 | Batteries, wet, filled with acid, electric storage | 43.5 | 0.7 | 47.9 | 0.3 | S | S | 17.3 |
| 2924 | Flammable liquids, corrosive, n.o.s. | 38.8 | – | S | S | S | S | S |
| 3082 | Environmentally hazardous substances, liquid, n.o.s. | 20.8 | 0.2 | 38.9 | 0.3 | 32.1 | 0.9 | 10.0 |
| 3257 | Elevated temperature liquid, n.o.s. | 31.6 | 0.5 | 31.4 | 1.2 | 28.3 | 0.9 | 14.1 |
| 3264 | Corrosive liquid, acidic, inorganic, n.o.s. | 27.2 | 0.3 | S | S | S | S | 17.0 |
| – | All other | 3.9 | 1.9 | 9.2 | 1.1 | 11.2 | 3.2 | 7.8 |
KEY:
– Represents an estimate equal to zero or less than 1 unit of
measure.
S Estimate does not meet publication standards because of highly sampling
variability or poor response quality.
CV Coefficient of variation of number
NOTE: The Introduction and appendixes give information on 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, Hazmat Data, December 2004.