expression, godan verb (-ru)
accelerate; gain momentum; be spurred on
Idiomatic expression meaning that something is spurred on or gains momentum, often due to an external factor. Intransitive counterpart to 拍車をかける.
See also: 拍車をかける
新技術の導入で開発に拍車がかかった。
The introduction of new technology accelerated development.
His success gave momentum to the other players' efforts.