noun
brake van; guard's van; caboose
A railway vehicle attached to the end of a freight train, used by the crew for braking and accommodation. The term is primarily historical in many regions, replaced by modern braking systems.
昔の貨物列車には緩急車が連結されていた。
Old freight trains had a caboose coupled at the end.
緩急車には車掌が乗り、ブレーキ操作を行っ
The conductor rode in the brake van and operated the brakes.