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The Dallas North Tollway (DNT, or simply the Tollway) is a controlled-access toll road operated by the North Texas Tollway Authority (NTTA), which runs from Interstate 35E near downtown Dallas, Texas (USA), to U.S. Highway 380, in Frisco, Texas. The Dallas North Tollway was the first toll road in the United States to implement Electronic Toll Collection technology, with the introduction of the TollTag in 1989. TollTag users were originally charged $0.05 extra per transaction, but by 1999, the agency moved to the active encouragement of TollTag use by giving tag users a discount off the cash toll rate. In August 2007, the NTTA announced plans to phase out manned toll booths entirely by May 2010.〔(【引用サイトリンク】 accessdate=2007-09-30 )〕 The Tollway was converted to all-electronic toll collection on December 11, 2010.〔(【引用サイトリンク】 accessdate=2010-12-13 )〕 North of I-635, the Dallas North Tollway is accompanied by frontage roads, which are designated as Dallas Parkway for address purposes. This is attributed to when Dallas Parkway was a major thoroughfare before being converted to the current Tollway configuration.〔http://maps.google.com/maps/place?ftid=0x864c3c866a95acd3:0xfdcab511df21126&q=Dallas+Parkway,+Dallas,+TX&hl=en&ved=0CAwQ-gswAA&sa=X&ei=TsThUOSXB6eIwQGa94GgCA Dallas Pkwy, Dallas ''Google Maps''〕 ==History== The initial segment of the tollway ran from Interstate 35E to Royal Lane along an old St. Louis Southwestern Railway corridor. The right-of-way is generally along this segment, one of the narrowest controlled-access roads in Texas. The segment was completed in June 1968 and toll was originally 20 cents. The tollway was later extended to Briargrove Lane in 1987, to Headquarters Drive in 1994, to S.H. 121 and Gaylord Parkway in 2004, and to US 380 in 2007. The extensions generally parallel S.H. 289, also known as Preston Road. The "DNT Extension Phase 3," which runs from State Highway 121 to U.S. Highway 380, opened in mid-2007. Current tolls vary from $0.40 to $2.15 for a car with it being more expensive closer to downtown; the lone exception is the Eldorado Pkwy. toll plaza in Frisco. The Tolltag offers a discount on these rates (tolls are $0.30 to $1.41) but requires a prepayment of $40 for up to three transponders, and after that, TollTag accounts can be reloaded at a minimum of $10. Rates increased in September 2009 and will increase every two years. All toll plazas are now equipped for electronic toll collection and main lane plazas feature TollTag express lanes. 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「Dallas North Tollway」の詳細全文を読む スポンサード リンク
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