noun
extra bus; additional bus service
Refers to a bus put into service temporarily, often to handle increased demand during events, holidays, or disruptions.
See also: 臨時列車
花火大会のため、臨時バスが運行されます。
Extra buses will be operated for the fireworks festival.
事故で電車が止まったので、臨時バスが出た。
Because the train stopped due to an accident, a temporary bus service was provided.