Based on the principle of kanzaidoitsushi, the route for a regular train ticket in one direction cannot include both a Shinkansen line section and a section on the regular railway in parallel with the Shinkansen line section.
幹在同一視の原則により、普通乗車券片道乗車券の経路に新幹線とそれに対応する区間の並行在来線の両方を含む事はできない。