平常運転
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Meanings
1
normal operation; running normally
Used for transport services (trains, buses) operating on schedule without disruption.
It was delayed due to the typhoon, but it has now returned to normal operation.
2
business as usual; normal state of affairs
Colloquial extension: things are proceeding as they always do, often with a nuance of 'same as ever' or 'nothing special'.
Him being late is nothing new; today is business as usual.