Table B-9b. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by Private Truck for Selected UN Numbers: 2002

Table B-9b. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by Private Truck for Selected UN Numbers: 2002

[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]

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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 4.8 5.3 7.9 5.3
0332 Explosive, blasting, type E or Agent blasting, Type E 40.3 0.1 S S 44.5 0.3 46.1
1005 Ammonia, anhydrous 27 25.9 0.1 S S S
1006 Argon, compressed 49.2 0.4 48.7 0.3 S S S
1013 Carbon dioxide 29.8 0.1 S S S S 26.1
1017 Chlorine 48.3 0.3 S S S S 17.8
1066 Nitrogen, compressed 34.4 0.1 41.2 0.7 S S 26.3
1072 Oxygen, compressed 17.9 33.1 0.3 S S 36.2
1075 Petroleum gases. 17.3 0.6 26.6 0.6 46.3 1.6 29.8
1202 Gas oil, diesel fuel, heating oil, light 20.3 0.8 17.9 0.8 30.2 0.6 13.3
1203 Gasoline 5.9 2 6 2 13.4 3.4 15.2
1223 Kerosene 26.6 0.1 31.5 0.2 42.5 0.2 23.2
1263 Paint including paint, lacquer, enamel, stain 25.9 0.9 22.6 0.1 19.5 0.2 17.9
1267 Petroleum crude oil S S S S S S 31.4
1789 Hydrochloric acid 23.7 46.9 0.2 40.5 0.2 16.8
1824 Sodium hydroxide solution 20.2 0.2 40.3 0.3 S S 24.2
1863 Fuel, aviation, turbine engine 21.5 0.1 28 0.2 25.9 0.1 32.3
1964 Hydrocarbon gas mixture, compressed, n.o.s. S S S S S S 19.6
1993 Flammable liquids, n.o.s. 9.1 1.2 8.3 1.4 12 2.6 12.7
3077 Environmentally hazardous substances, solid, n.o.s. S S S S S S 20
3257 Elevated temperature liquid, n.o.s. 40.5 0.2 36.8 0.5 24.2 0.8 23.6
All other 8.5 1.1 7.7 0.4 12.7 1.4 19.3

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.