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Automatic Train Protection

railway cab signalling system

en-US/ˌɑdəˈmædɪk ˈtɹeɪn pɚˈtɛkʃən/
en-GB/ˌɔːtəˈmætɪk ˈtɹeɪn pɹəˈtɛkʃn/

分类：

train protection system