Standard operating time - standard operating time

...In addition, the Tokaido and Sanyo Shinkansen lines have an A at the end of their numbers, the Tohoku Shinkansen lines have a B, and the Joetsu Shinkansen lines have a C.
[How to make]
When creating a train schedule, passenger and freight transport demand, fluctuations in transport volume, equipment conditions, vehicle operation, and crew operation are carefully considered, but the schedule itself is drawn up by calculating the arrival time, which is the sum of the standard operating time, leeway time, and stopping time. The standard operating time is the maximum operating time determined by the track conditions (single track, double track, curves, gradient, etc.) and the types of locomotives and electric trains, as well as the composition of the trains.

*Some of the terminology that refers to "standard operating hours" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…なお，新幹線では番号の末尾に東海道･山陽新幹線がA，東北新幹線はB，上越新幹線はCをつける。
［作成法］
　列車ダイヤ作成にあたっては，客貨の輸送需要，輸送量の変動，設備条件，車両運用，乗務員運用などを綿密に検討して行うが，ダイヤそのものは基準運転時分と余裕時分と停車時分を合計した到達時分を計算して作図される。基準運転時分は単線，複線，曲線，こう配などの線路条件と機関車，電車などの車種，編成から決定される性能いっぱいの運転時分である。…

※「基準運転時分」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報