Nagoya Municipal Subway increases train service from March 29, 2025. There will be 5 mins headways during daytime on weekdays, instead of the current 6 mins headways. It results in recovery of train frequency before 2022.

名古屋市営地下鉄東山線が平日日中6→5分間隔に。2022年の減便分取り戻す。2025/3/29にダイヤ改正
Nagoya Municipal Subway increases train service from March 29, 2025. There will be 5 mins headways during daytime on weekdays, instead of the current 6 mins headways. It results in recovery of train frequency before 2022.
https://dia.seesaa.net/article/509221557.html

During daytime on weekdays, 6 mins headways→5 mins headways
During daytime on weekends, 5 mins headways→4.5 mins headways
During morning rush hour on weekdays, 2 mins 10 seconds headways→2 mins 5 seconds headways
During evening on weekdays, 3.5 mins headways→3 mins headways
During evening on weekends, 5 mins headways→3.5 mins headways

As a whole, 44 trains will be added on weekdays. 48 trains will be added on weekends.