Initially, because the differences in the fares and fees were small and there were differences in their traveling time, more and more passengers came to use the Shinkansen line, and the limited express business continued to be sluggish until the first half of 1970s, except in 1970 when the Osaka Expo was held.
当初は運賃・料金でも差が小さかったことや、到達時間の差などから客を新幹線に次々と奪われ、大阪万博のあった1970年を除き、1970年代前半までは低迷が続いた。