A type of Electronic TokenAn electronic message transmitted by radio between a Signal Box and train. It performs the function of a Token but no physical Token is required. See RETB. More that gives engineering staff Possession of the
line.
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A type of Electronic TokenAn electronic message transmitted by radio between a Signal Box and train. It performs the function of a Token but no physical Token is required. See RETB. More that gives engineering staff Possession of the
line.