driver-only operation

Noun

uncountable

(rail transport) The operation of a train without a conductor or guard as a cost-cutting measure; one-man operation.

Japanese Meaning

運転士単独運行（鉄道において、運転士のみで列車を運行する方式） / 一人乗務制運行 / 補助員不在の運行形態

The railway company introduced driver-only operation on several rural lines to cut costs, prompting protests from labor unions.

その鉄道会社はコスト削減のため、いくつかの地方路線で運転士のみの運行を導入し、労働組合の抗議を招いた。

Sense（1）

(rail transport) The operation of a train without a conductor or guard as a cost-cutting measure; one-man operation.