The Saikyo Line was initially troubled by inadequate train control systems which could not keep pace with its frequency of service; however, these issues were worked out during the first month of service.
Jalur Saikyo pada awalnya bermasalah dengan kurangnya sistem pengendalian kereta yang tidak dapat mengatasi peningkatan frekuensi layanan kereta; namun, permasalahan ini dapat datasi pada bulan pertama pelayanan.