Automatic Train Protection

railway cab signalling system

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

ক্যাটাগরি:

train protection system