“There were signs of trouble for a long time before the dam finally broke, but the corporation that manages it was asleep at the wheel.”
A driver falling asleep at the steering wheel of his car is a common cause of car accidents. We can use this idiom to describe anyone who caused a problem by not paying attention.
「ダムが決壊する前にいくつかの兆しがありましたが、管理会社の不注意で対策をとっていませんでした。」
居眠り運転(Asleep at the Wheel)は、よくある交通事故の原因です。このイディオムは、不注意で問題を起こす人に使えます。