![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/5/59/DR2700-10706333156.jpg/640px-DR2700-10706333156.jpg&w=640&q=50)
Automatic train protection
System installed in trains to prevent collisions through driver error / From Wikipedia, the free encyclopedia
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]
For British Rail's implementation of ATP, see Automatic Train Protection (United Kingdom).
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/5/59/DR2700-10706333156.jpg/640px-DR2700-10706333156.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/5/59/GWR_HST_ATP_notice_1_%28cropped%29.jpg/640px-GWR_HST_ATP_notice_1_%28cropped%29.jpg)