relay interlocking

railway interlocking that uses relays

en-GB/ɹɪˈleɪ ˌɪntəˈlɒkɪŋ/
en-US/ˈɹiˌleɪ ˈɪntɚˌlɑkɪŋ/

دسته بندی ها:

signalling control