Automatic train protection

Automatic train protection (ATP) is a type of train protection system which continually checks 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ATP activates an emergency brake to stop the train.[1] ATP systems are now a legacy, defunct technology that has been superseded throughout Europe and internationally by the European Rail Traffic Management System.[2]

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

See also

References

  1. "ERA Glossary" (PDF). ERA.Europa.eu. Archived (PDF) from the original on 6 May 2017. Retrieved 27 June 2017.
  2. Härkönen, Aki (2017). "Deployment of the European Rail Traffic Management System / European Train Control System(ERTMS/ETCS) in Finland. Finland's national implementation plan for the European Commission in 2017: 2.2 ATP life cycle management plans for the 2020s and 2030s" (PDF). p. 9. The staggered deployment of the current ATP system is shown in Figure 2. The railway automation industry will not continue to support their old product families indefinitely. As the life cycle of the ATP system is coming to an end, there is no choice but to migrate to the ERTMS/ETCS, even if the new system is not necessarily an improvement...
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