Automatic Train Protection (United Kingdom)
Railway cab signalling system / From Wikipedia, the free encyclopedia
This article is about British Rail's implementation of ATP. For generic train protection systems, see Automatic train protection.
Automatic Train Protection (ATP) is a method of beacon based railway cab signalling developed by British Rail. The system is only installed on the Great Western Main Line between London Paddington and Bristol Temple Meads, and the Chiltern Main Line from London Marylebone to High Wycombe and Aylesbury.