ATP switchboard in a Taiwan Railways Administration DR2700 series carriage
Automatic Train Protection notice on a First Great Western InterCity 125

Automatic train protection (ATP) is the generic term for train protection systems that continually check that the speed of a train is compatible with the permitted speed allowed by signalling, including automatic stop at certain signal aspects. If it is not, ATP activates an emergency brake to stop the train.[1]

See also


  1. ^ "ERA Glossary". Archived (PDF) from the original on 6 May 2017. Retrieved 18 July 2023.