noun
falling asleep at the wheel; drowsy driving
Refers to the dangerous act of dozing off while driving. Often used in traffic safety contexts.
居眠り運転による事故が増えている。
Accidents caused by falling asleep at the wheel are increasing.
長時間の運転で居眠り運転をしてしまいそうになった。
I almost fell asleep at the wheel after driving for a long time.
Compound of 居眠り (inemuri, 'dozing off') and 運転 (unten, 'driving').