Takara TOMY Plarail タカラトミー プラレール\r
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ドクターイエローとは、新幹線区間において、線路のゆがみ具合や架線の状態、信号電流の状況などを検測しながら走行し、新幹線の軌道・電気設備・信号設備を検査するための事業用車両の愛称である。\r
Doctor Yellow (ドクターイエロー?) is the nickname for the high-speed test trains that are used on the Japanese Shinkansen (Bullet Train) dedicated express passenger train routes. The trains have special equipment on board to monitor the condition of the track and overhead wire, including special instrumented bogies and observation blisters.\r
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The Doctor part of the name is from their test and diagnostic function, and the Yellow part comes from the bright yellow color they are all painted. Some have a blue waistline stripe, some a green one. The original color scheme of yellow with a blue stripe (applied to the Class 921 track-recording cars) was created by reversing the colors (blue with yellow stripe) used on 1,067 mm (3 ft 6 in) narrow-gauge track-recording cars.\r
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In build and appearance, they are very similar to production, passenger carrying Shinkansen trains, and line inspection is carried out at full line speed (i.e. up to 270 km/h or 168 mph on the Tōkaidō Shinkansen).\r
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