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The Tōmei Expressway (東名高速道路, Tōmei Kōsoku Dōro) is a national expressway on the island of Honshū in Japan. It is operated by Central Nippon Expressway Company. The expressway is designated as E1 under the "2016 Proposal for Realization of Expressway Numbering", because it parallels National Route 1.[4] It is a part of the Asian Highway Network. 
AH1
The word Tōmei is an acronym consisting of two kanji characters. The first character refers to Tokyo (東京) and the second refers to Nagoya (名古屋), which are the two major urban areas linked by the expressway.
Officially the expressway is designated as the First Tōkai Expressway.[5] A second Tōkai Expressway (operating as the Shin-Tōmei Expressway) is under construction parallel to the existing route, and is intended to alleviate congestion problems[6] in the near term.
The expressway is also a part of Route AH1 of the Asian Highway Network.[7][8]
The Tōmei Expressway is an important roadway linking Tokyo and Nagoya. It is the most heavily travelled roadway operated by Central Nippon Expressway Company, with some sections used by more than 100,000 vehicles a day.[6]
The first sections were opened to traffic in 1968 and the entire route was completed in 1969.[2]
東名高速道路は、東京西部を起点として神奈川県を西へ進み、国道246号線と並行して横浜の北側を通過します。さらに西へ進み静岡県に入ると、富士山の南側を通り、駿河湾の海岸線に沿って国道1号線と東海道と並行して静岡市に到達します。高速道路は西へ進み、静岡県西部の浜名湖を通過して愛知県に入ります。その後、北西へ向かい、名古屋市の東側を通過して中央自動車道の終点と合流し、名古屋の北にある小牧市のインターチェンジで終点となります。東名自動車道はこの地点で終わりますが、道路は名神自動車道として京都、大阪、神戸方面へと続いています。
北緯35度35分40秒、東経139度34分24秒/北緯35.594315度、東経139.573410度/北緯35.594315度、東経139.573410度