Table 3-19. Employment in For-Hire Transportation and Selected Transportation-Related Industries^a (Thousands)

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^a Annual averages.
^b Excludes farm employment.
^c Does not include drivers employed by school districts.
^d Difference between the total of SIC 41 and the sum of 411, 412, 413, and 415.
^e In 1997, the American Gas Association revised the database that identifies companies by type (e.g., distribution, integrated, or  transmission). This reclassification has resulted in additions to the distribution and reductions to the integrated company categories  beginning with the revised data in 1996. Additionally, data by company type are not directly comparable from year to year due to acquisitions and mergers.
^f Transportation services are defined as services incidental to transportation, such as forwarding and packing; motor vehicle inspections; and freight broker, tour operator, and travel agency services, etc.
^g The difference between the total of SIC 37 and the sum of 371, 372, 373, and 374.
^h The difference between the total of SIC 55 and the sum of 551, 553, and 554.
^I Not all government agencies are included (e.g., the National Transportation Safety Board).                
^j U.S. Department of Transportation was created in 1966. Data are for fiscal year and include permanent civilians as well as  temporary employees and military.
^k Full-time equivalent employment. Data prior to 1986 are not directly comparable to data from later years due to a change in the way full-time equivalent  was calculated. Full-time equivalent was not calculated for 1985.
^l Due to a change in the reference period, from October to March, the October 1996 Annual Survey of Government Employment and Payroll was not conducted.

KEY: N = data do not exist; R = revised; U = data are not available.

NOTES: The employment totals in tables 3-19 and 3-20 differ. Table 3-19 shows employment in transportation and selected transportation-related  industries. Table 3-20 shows employment by transportation occupation. Some employees of transportation industries have  nontransportation jobs (e.g., a bookkeeper in a trucking firm), and some people with transportation occupations do not work in the  transportation industry (e.g., a truck driver for a construction firm). Beginning in January 1999, data are not strictly comparable with data for 1998 and earlier years because of revisions in the population controls used in the household survey.

SOURCES:
All data, except as noted:
1960-85: U.S. Department of Labor, Bureau of Labor Statistics, Employment, Hours and Earnings, United States, 1909-1994  (Washington, DC: September 1994).
1990-99: Ibid. Internet site www.bls.gov/datahome.htm, database query for individual series, as of Apr. 20, 2000.
Natural gas pipeline:
1975-99: American Gas Association, Gas Facts (Arlington, VA: Annual issues), table 14-2 and similar tables in earlier editions.
Government employment:
USDOT:
1970-75: U.S. Department of Commerce, Bureau of the Census, Statistical Abstract of the United  States, 1976 (Washington, DC: 1976), table 409, and U.S. Department of Transportation, U.S. Coast  Guard, G-WPM, Office of Military Personnel, personal communication.
1980-85: U.S. Department of Transportation, Office of the Secretary of Transportation, DOT Employment Facts, A Report to  Management (Washington, DC: Annual issues).
1990-99: Ibid. DOT Workforce Demographics (Washington, DC : Annual issues).
State and local highway:
1960-91: U.S. Department of Commerce, Bureau of the Census, Statistical Abstract of the United States, 1993 (Washington, DC: 1993),  table 500 and similar tables in earlier editions.
1992-98: Ibid. Internet site http://www.census.gov/pub/govs/www/apesstl.html, as of Apr. 24, 2000.