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Drogowa Trasa Średnicowa (DTŚ, can be translated as ''diametral highway'' or ''central highway'') is a highway in Silesian Voivodeship, Poland. The DTŚ is entirely a divided highway, with a minimum of 3 lanes in each direction. It is one of the most important roads of the Upper Silesian Industrial Region. The DTŚ runs most of its course parallel to A4 motorway but, unlike A4, the DTŚ provides access to the congested centers of the Upper Silesian Metropolitan Union with 26 junctions (A4 has 6 junctions in the comparable section).〔 Currently, the DTŚ runs from Katowice, through Chorzów and Świętochłowice, Ruda Śląska, Zabrze to Gliwice. An extension through Gliwice is scheduled to be completed in 2015. The interchange with A1 motorway and its connection to A4 motorway has been in use since November 2014. The construction of road resulted in a considerable improvement in the traffic of the highly urbanized area of Upper Silesian Metropolitan Union. It shortened the road distance between Katowice and Gliwice by 26%, travelling time by 76%, consumption of gasoline by 47%, the number of road accidents by 82%, exploitation costs by 39%, and air pollution by 50%.〔("Roads to Euro 2012. An Analysis of Poland's Road Infrastructure. Current Status and the Development Opportunities." ) American Chamber of Commerce in Poland, Warszawa, June 2007.〕 ==History of construction== The DTŚ is the largest road investment ever carried out by a local government in Poland. The construction started in 1986. In 1990, due to Polish financial problems, the work practically halted. Since 1994 the budget for construction increased thanks to the European Investment Bank (EIB) that provided a guarantee of funding. Since 1999 the construction of the DTŚ has been a shared responsibility of the Polish government, local government of the Silesian Voivodeship and of the cities through which the road runs, and work progresses steadily. So far over were completed out of the total planned . A local organization in Gliwice has been protesting against proposed layout of the road through the city center (on ecological basis).〔(GdG Association ) 〕 An eastern extension of the DTŚ is planned for a more distant future. This branch would run from Katowice to Mysłowice, Sosnowiec, Będzin and Dąbrowa Górnicza. The planned length of this section is . 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「Drogowa Trasa Średnicowa」の詳細全文を読む スポンサード リンク
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