Automatic train protection

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ATP switchboard in a Taiwan Railways Administration DR2700 series carriage

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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.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

See also

• Advanced Civil Speed Enforcement System
• Anti Collision Device
• Automatic Warning System
• Automatische treinbeïnvloeding (ATB)
• British Rail's ATP system
• Continuous Automatic Warning System (CAWS)
• EBICAB
• European Train Control System (ETCS)
• Kavach
• Positive Train Control (PTC)
• Punktförmige Zugbeeinflussung (PZB)
• Train Protection & Warning System
• Train Warning System
• Transmission Voie-Machine (TVM)