{
  "edition": "2026-11-07",
  "id": "doctor-yellow-923",
  "locale": "de",
  "url": "https://senroam.com/de/trains/doctor-yellow-923/",
  "name": "923 · Doctor Yellow · T4 / T5",
  "summary": "923 · Doctor Yellow · T4 / T5 · Messzug. Breite Nase auf Grundlage der Baureihe 700.",
  "type": "train",
  "questions": [
    {
      "id": "doctor-yellow-923-q1",
      "question": "Wurden beide 923-Einheiten im Januar 2025 ausgemustert?",
      "answer": "T4 von JR Central absolvierte seine letzte Messfahrt am 29. Januar 2025. T5 von JR West setzte die Messfahrten zwischen Tokio und Hakata fort, einschließlich des Tōkaidō-Abschnitts östlich von Shin-Osaka. Mit Stand 7. November 2026 plant JR West das Ende der T5-Messfahrten für Januar 2027.",
      "evidence": [
        {
          "title": "ドクターイエロー（T4編成）部品オークション・車両解説",
          "url": "https://market.jr-central.co.jp/shop/pages/s983_t4auction.aspx",
          "publisher": "JR東海",
          "lang": "ja",
          "date": null,
          "page": null,
          "checked": "2026-11-07"
        },
        {
          "title": "ドクターイエロー（Ｔ４編成）引退に伴うイベント等の実施について",
          "url": "https://jr-central.co.jp/news/release/_pdf/000043982.pdf",
          "publisher": "JR東海",
          "lang": "ja",
          "date": "2024-12-12",
          "page": 1,
          "checked": "2026-11-07"
        },
        {
          "title": "500系新幹線＆「ドクターイエロー」Ｔ５編成の引退について",
          "url": "https://www.westjr.co.jp/press/article/2026/06/22/items/260622_00_press_500kei_dryellow.pdf",
          "publisher": "JR西日本",
          "lang": "ja",
          "date": "2026-06-22",
          "page": 1,
          "checked": "2026-11-07"
        }
      ],
      "sources": [
        "https://market.jr-central.co.jp/shop/pages/s983_t4auction.aspx",
        "https://jr-central.co.jp/news/release/_pdf/000043982.pdf",
        "https://www.westjr.co.jp/press/article/2026/06/22/items/260622_00_press_500kei_dryellow.pdf"
      ]
    },
    {
      "id": "doctor-yellow-923-q2",
      "question": "Steht die letzte Messfahrt von T5 in einem Fahrplan?",
      "answer": "JR West veröffentlicht nach eigener Aussage keine Messfahrpläne, auch nicht das Datum der letzten Messfahrt. Gesondert angekündigte Veranstaltungen sind ausgenommen. Die Mitteilung nennt Januar 2027 als geplanten Monat, verspricht aber keinen bestimmten Tag oder Bahnhof.",
      "evidence": [
        {
          "title": "500系新幹線＆「ドクターイエロー」Ｔ５編成の引退について",
          "url": "https://www.westjr.co.jp/press/article/2026/06/22/items/260622_00_press_500kei_dryellow.pdf",
          "publisher": "JR西日本",
          "lang": "ja",
          "date": "2026-06-22",
          "page": 1,
          "checked": "2026-11-07"
        }
      ],
      "sources": [
        "https://www.westjr.co.jp/press/article/2026/06/22/items/260622_00_press_500kei_dryellow.pdf"
      ]
    },
    {
      "id": "doctor-yellow-923-q3",
      "question": "Warum ähnelt ein 923 der Baureihe 700, und was änderte sich darunter?",
      "answer": "Die Fahrgastbaureihe 700 lieferte die Ausgangskonstruktion. Für Messfahrten bei 270 km/h erhielt der 923 einen 25 m langen Gleismesswagen auf zwei Drehgestellen. Lasermessung ersetzte das frühere Verfahren, das Gleislageabweichungen aus den Positionen dreier Drehgestelle bestimmte.",
      "evidence": [
        {
          "title": "世界に誇る安全な新幹線を守ってきた「ドクターイエロー」の歩みを振り返る",
          "url": "https://www.tetsudo.com/report/481/",
          "publisher": "鉄道コム（栗原景）",
          "lang": "ja",
          "date": "2025-01-26",
          "page": null,
          "checked": "2026-11-07"
        },
        {
          "title": "ドクターイエロー（T4編成）部品オークション・車両解説",
          "url": "https://market.jr-central.co.jp/shop/pages/s983_t4auction.aspx",
          "publisher": "JR東海",
          "lang": "ja",
          "date": null,
          "page": null,
          "checked": "2026-11-07"
        }
      ],
      "sources": [
        "https://www.tetsudo.com/report/481/",
        "https://market.jr-central.co.jp/shop/pages/s983_t4auction.aspx"
      ]
    },
    {
      "id": "doctor-yellow-923-q4",
      "question": "Wozu dienten die kleinen Dachkuppeln von T4?",
      "answer": "Aus den Beobachtungskuppeln der Wagen 3 und 5 konnte das Personal den Kontakt zwischen Stromabnehmer und Fahrdraht beobachten. Eine Kamera an der Beobachtungsstelle übertrug außerdem Bilder in den elektrischen Messraum in Wagen 1. Wagen 4 hatte eine andere Aufgabe: Seine Bildschirme zeichneten während der Fahrt die Gleisgeometrie auf.",
      "evidence": [
        {
          "title": "ドクターイエロー（T4編成）部品オークション・車両解説",
          "url": "https://market.jr-central.co.jp/shop/pages/s983_t4auction.aspx",
          "publisher": "JR東海",
          "lang": "ja",
          "date": null,
          "page": null,
          "checked": "2026-11-07"
        }
      ],
      "sources": [
        "https://market.jr-central.co.jp/shop/pages/s983_t4auction.aspx"
      ]
    },
    {
      "id": "doctor-yellow-923-q5",
      "question": "Warum können Fotos von T4 unterschiedliche Herstellerschilder zeigen?",
      "answer": "Prüfe zuerst die Wagenposition. JR Central nennt Hitachi als Hersteller der Wagen 1–3 und Nippon Sharyo für Wagen 4–7. Alle sieben trugen außerdem ein Außenschild von JR Central. Ein Eigentümerschild und ein Herstellerschild können daher am selben Wagen unterschiedliche, jeweils richtige Angaben zeigen.",
      "evidence": [
        {
          "title": "ドクターイエロー（T4編成）部品オークション・車両解説",
          "url": "https://market.jr-central.co.jp/shop/pages/s983_t4auction.aspx",
          "publisher": "JR東海",
          "lang": "ja",
          "date": null,
          "page": null,
          "checked": "2026-11-07"
        }
      ],
      "sources": [
        "https://market.jr-central.co.jp/shop/pages/s983_t4auction.aspx"
      ]
    }
  ],
  "sources": [
    {
      "url": "https://jr-central.co.jp/news/release/_pdf/000043982.pdf",
      "checked": "2026-11-07",
      "lang": "ja"
    },
    {
      "url": "https://www.westjr.co.jp/press/article/2026/06/22/items/260622_00_press_500kei_dryellow.pdf",
      "checked": "2026-11-07",
      "lang": "ja"
    },
    {
      "title": "ドクターイエロー（T4編成）部品オークション・車両解説",
      "url": "https://market.jr-central.co.jp/shop/pages/s983_t4auction.aspx",
      "publisher": "JR東海",
      "lang": "ja",
      "date": null,
      "page": null,
      "checked": "2026-11-07"
    },
    {
      "title": "ドクターイエロー（Ｔ４編成）引退に伴うイベント等の実施について",
      "url": "https://jr-central.co.jp/news/release/_pdf/000043982.pdf",
      "publisher": "JR東海",
      "lang": "ja",
      "date": "2024-12-12",
      "page": 1,
      "checked": "2026-11-07"
    },
    {
      "title": "500系新幹線＆「ドクターイエロー」Ｔ５編成の引退について",
      "url": "https://www.westjr.co.jp/press/article/2026/06/22/items/260622_00_press_500kei_dryellow.pdf",
      "publisher": "JR西日本",
      "lang": "ja",
      "date": "2026-06-22",
      "page": 1,
      "checked": "2026-11-07"
    },
    {
      "title": "世界に誇る安全な新幹線を守ってきた「ドクターイエロー」の歩みを振り返る",
      "url": "https://www.tetsudo.com/report/481/",
      "publisher": "鉄道コム（栗原景）",
      "lang": "ja",
      "date": "2025-01-26",
      "page": null,
      "checked": "2026-11-07"
    }
  ],
  "detail": "Messzug. Breite Nase auf Grundlage der Baureihe 700.",
  "technical": {
    "record": [
      [
        "923 type · JR West T5",
        "923形 · JR西日本T5編成"
      ],
      [
        [
          "formation",
          "7 cars",
          "7両",
          "t5"
        ],
        [
          "base",
          "700 series",
          "700系",
          "t5"
        ],
        [
          "built",
          "2005",
          "2005",
          "t5"
        ],
        [
          "inspection_speed",
          "270 km/h",
          "270 km/h",
          "t5"
        ]
      ]
    ],
    "sources": {
      "zero": [
        "日本車輌製造",
        "0系新幹線の主要諸元",
        "https://www.n-sharyo.co.jp/museum/tec0/tec0-spec.html",
        null,
        "主要諸元・2両ユニット"
      ],
      "history": [
        "日本車輌製造",
        "新幹線の変遷",
        "https://www.n-sharyo.co.jp/business/tetsudo/shinkansen/tec-mechanism.html",
        null,
        "車体材質・台車・制御装置"
      ],
      "300": [
        "日本車輌製造",
        "300系新幹線",
        "https://www.n-sharyo.co.jp/business/tetsudo/pages/jrc300.htm",
        null,
        "交流電動機・アルミ車体"
      ],
      "500": [
        "日本車輌製造",
        "JR西日本500系新幹線",
        "https://www.n-sharyo.co.jp/business/tetsudo/pages/jrw500.htm",
        null,
        "先頭長15 m・アルミハニカム車体"
      ],
      "700": [
        "日本車輌製造",
        "JR東海700系新幹線",
        "https://www.n-sharyo.co.jp/business/tetsudo/pages/jrc700.htm",
        null,
        "アルミ中空形材・区間別速度"
      ],
      "hitachi": [
        "日立製作所",
        "新型高速新幹線電車",
        "https://www.hitachihyoron.com/jp/pdf/1997/02/1997_02_02.pdf",
        "1997-02",
        "表1・冊子154頁"
      ],
      "n700": [
        "JR東海",
        "N700系・N700A 車両のご案内",
        "https://railway.jr-central.co.jp/train/shinkansen/detail_01_01/index.html",
        null,
        "諸元"
      ],
      "n700early": [
        "日本車輌製造",
        "JR東海N700系新幹線",
        "https://www.n-sharyo.co.jp/business/tetsudo/pages/jrcn700.htm",
        null,
        "開発時の主要諸元"
      ],
      "n700s": [
        "JR東海",
        "N700S 車両のご案内",
        "https://railway.jr-central.co.jp/train/shinkansen/n700s/index.html",
        null,
        "諸元"
      ],
      "sic": [
        "JR東海",
        "N700Sに採用する新技術について",
        "https://jr-central.co.jp/news/release/_pdf/000035165.pdf",
        "2017-09-28",
        "SiC素子駆動システム"
      ],
      "battery": [
        "JR東海",
        "N700S量産車の仕様および投入計画",
        "https://jr-central.co.jp/news/release/_pdf/000039300.pdf",
        "2019-01-25",
        "別紙4・バッテリ自走"
      ],
      "t3": [
        "JR西日本・白山市",
        "トレインパーク白山でのドクターイエロー（T3編成）の車両展示",
        "https://www.westjr.co.jp/press/article/items/250130_00_DoctorYellowT3inHakusantrainpark.pdf",
        "2025-01-30",
        "1頁"
      ],
      "t5": [
        "JR西日本",
        "ワタシたちの解体新書 ドクターイエロー",
        "https://www.jr-odekake.net/navi/the_last_run/project-t5/",
        null,
        "T5編成 基本DATA"
      ],
      "alfa": [
        "JR東日本",
        "JR EAST Technical Review No.65",
        "https://www.jreast.co.jp/development/tech/pdf_65/tech-65-05-15.pdf",
        "2020",
        "冊子9頁・ALFA-X主要諸元"
      ]
    }
  },
  "engineering": {
    "record": {
      "scope": {
        "en": "923 inspection work; T5 identity and JR Central-group track-measurement account",
        "ja": "923形の検測・T5の情報とJR東海グループの軌道検測解説"
      },
      "facts": [
        {
          "label": {
            "en": "Electrical measurements",
            "ja": "電気関係の検測"
          },
          "value": {
            "en": "Overhead equipment, ATC signals and train-radio reception",
            "ja": "架線設備・ATC信号・列車無線受信状態"
          },
          "sources": [
            "west:west-t5"
          ]
        },
        {
          "label": {
            "en": "Track data processing",
            "ja": "軌道データ処理"
          },
          "value": {
            "en": "Underfloor sensors; real-time on-board waveform display",
            "ja": "床下センサー・車上でリアルタイム波形表示"
          },
          "sources": [
            "west:west-trackinspection"
          ]
        },
        {
          "label": {
            "en": "Maintenance handoff",
            "ja": "保線へのデータ受け渡し"
          },
          "value": {
            "en": "Urgent findings relayed immediately; routine data sent by that evening",
            "ja": "緊急情報は即時連絡・検測データは当日夕方に送信"
          },
          "sources": [
            "west:west-trackinspection"
          ]
        }
      ],
      "insights": [
        {
          "title": {
            "en": "A moving measurement laboratory",
            "ja": "走る測定室"
          },
          "text": {
            "en": "The purpose is to turn a high-speed run into maintenance decisions. Sensor readings are processed aboard, and track crews use the results to locate poor geometry and compare conditions before and after work.",
            "ja": "高速走行を保守判断につなぐ車両。センサー値を車上で処理し、保線側では線形の悪い箇所の把握や作業前後の状態確認に使う。"
          },
          "sources": [
            "west:west-trackinspection"
          ]
        }
      ],
      "gaps": [
        "This operational account does not establish sensor sampling rate, resolution or a common traction specification for T4 and T5."
      ]
    },
    "sources": {
      "west:west-t5": {
        "title": "ワタシたちの解体新書 ドクターイエロー",
        "publisher": "JR西日本",
        "url": "https://www.jr-odekake.net/navi/the_last_run/project-t5/",
        "date": null,
        "language": "ja",
        "locator": "T5 basic data and description of measurement targets",
        "checked": "2026-11-07"
      },
      "west:west-trackinspection": {
        "title": "ドクターイエロー｜線路の状態を診る",
        "publisher": "日本機械保線（JR東海グループ）",
        "url": "https://www.nkh-cjrg.co.jp/business/examine/dr-yellow/",
        "date": null,
        "language": "ja",
        "locator": "270km/hの高速走行で検測・ドクターイエロー検測室では",
        "checked": "2026-11-07"
      }
    },
    "checked": "2026-11-07"
  },
  "literature": []
}