|SIC categories (Index: 1997 = 100)||NAICS categories (Index: 1997 = 100)|
|Trucking, except local||Bus carriers, Class I||Petroleum pipeline||Railroad||Trucking, long distance||Air|
KEY: U = Data are unavailable.
NOTES: Output per hour worked is based on the number of paid hours. Labor productivity measures quality-adjusted ton- and passenger-miles per hour. Quality adjustment corrects for differences in services and handling, e.g., the difference between flying first class and coach or differences in the handling requirements and revenue generation of high- and low-value commodities. Railroad includes line-haul railroads primarily engaged in transportation of passengers and cargo over a long distance within a rail network. Trucking comprises establishments engaged in providing long-distance general freight trucking, usually between metropolitan areas that may cross North American country borders. Air includes establishments that provide scheduled and nonscheduled air transportation of passengers and cargo using aircraft, e.g. airplanes and helicopters.
These productivity measures capture railroad, long-distance trucking, and air transportation as defined by the North American Industry Classification System (NAICS), whereas those for trucking except local, bus, and petroleum pipeline are defined by the Standard Industrial Classification (SIC) system. At the time this report was prepared, the Bureau of Labor Statistics did not have plans to continue estimating productivity measures for petroleum pipeline, trucking, and bus carriers because of a lack of reliable data.
SIC categories were converted to a 1997=100 index from a 1987=100 index, by the Bureau of Transporation Statistics
SOURCE: U.S. Department of Labor, Bureau of Labor Statistics, Industry Productivity, available at: http://www.bls.gov/lpc/, as of July 2008 as reported in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, tables 3-24a and 3-25b, available at http://www.bts.gov/publications/national_transportation_statistics/ as of October 2008.