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The Texas Department of Transportation (TxDOT, pronounced "tex-dot") is a government agency in the U.S. state of Texas. Though the public face of the agency is generally associated with the construction and maintenance of the state's immense highway system, the agency is also responsible for overseeing aviation, rail, and public transportation systems in the state. At one time, TxDOT also administered vehicle registration;〔(Vehicle Registration )〕 but this function transferred to the Texas Department of Motor Vehicles, a newly created state agency which began operations in November 2009.〔"(About the Texas Department of Motor Vehicles )." Texas Department of Motor Vehicles. Retrieved on December 26, 2009.〕 The agency has been headquartered in the Dewitt C. Greer Building at 125 East 11th Street in downtown Austin, Texas, since 1933.〔http://www.txdot.gov/contact_us/〕 ==History== The Texas Legislature created the Texas Highway Department in 1971 to administer federal highway construction and maintenance. In 1975, its responsibilities increased when the agency merged with the Texas Mass Transportation Commission, to form the State Department of Highways and Public Transportation.〔Texas Highway Department: An Inventory of Highway Department Records at the Texas State Archives, 1920s-1930s, 1962-1975. http://www.lib.utexas.edu/taro/tslac/20021/tsl-20021.html〕〔Departmental Information Exchange, State Department of Highway and Public Transportation (1987). History of the Texas Highway Department in Hidalgo County. http://library.ctr.utexas.edu/digitized/texasarchive/thdresearch/dht-1.pdf〕 In 1986, the department started using "Don't Mess with Texas" as its slogan to reduce littering on Texas roadways, as part of a statewide advertising campaign. The phrase was prominently shown on road signs on major highways, as well as in television, radio, and print advertisements. The slogan is still in use and remains very popular.〔Don't Mess with Texas: The Campaign. url=http://www.dontmesswithtexas.org/about/the-campaign.php〕 In 1991, the Legislature combined the State Department of Highways and Public Transportation, the Department of Aviation, and the Texas Motor Vehicle Commission to create the Texas Department of Transportation (TxDOT). In 1997, the pre-existing Texas Turnpike Authority (TTA) was divided into two successor agencies: the North Texas Tollway Authority took responsibility for TTA assets in four North Texas counties, while the Turnpike Authority Division of Texas DOT was given jurisdiction over toll facilities in the rest of the state.〔Linda M. Spock & Sally Diane Liff, ''Tolling Practices for Highway Facilities'' (Transportation Research Board, 1998), ISBN 978-0-309-06816-1, p.12 ((excerpt available ) at Google Books).〕 In 2009, the Texas Department of Motor Vehicles was split off from TxDOT. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Texas Department of Transportation」の詳細全文を読む スポンサード リンク
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