Back Zwangsbremsung German Detención automática de tren (ATS) Spanish 自動列車停止装置 Japanese 자동 열차 정지 장치 Korean Automatisk togstopp NB Detenção automática de trem (ATS) Portuguese 列車自動停車系統 Chinese
Automatic train stop or ATS is a system on a train that automatically stops a train if certain situations occur (unresponsive train operator, earthquake, disconnected rail, train running over a stop signal, etc.) to prevent accidents. In some scenarios it functions as a type of dead man's switch. Automatic train stop differs from the concept of Automatic Train Control in that ATS usually does not feature an onboard speed control mechanism.