First of all, the interval that was capped by 15 minutes for all trains in 1989 was changed, and the number of limited express trains was reduced by operating with 20-minute intervals, while the number of express was increased by operating with 10-minute intervals.
まず1989年にすべての電車が15分ヘッドであったものを、特急を20分おきに減便し、急行を10分おきへと増便した。