When a Shinkansen station is not connected to a station on the regular railway line operated in parallel, the nearest (corresponding) station on the regular railway line is used for calculating route distances (for example, Hanamaki Station is used for calculating the route distance for Shin-Hanamaki Station).
並行在来線と接しない新幹線駅については、それに最も近い（もしくは対応する）並行在来線の駅に相当するものとして営業キロを定める（例新花巻駅は花巻駅の営業キロを用いる）。