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Blog Entry# 2956264
Posted: Dec 31 2017 (12:06)
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Last Response: Dec 31 2017 (12:27)
1 Responses
Last Response: Dec 31 2017 (12:27)
In railway signalling, the ring (A large one made of metal or bamboo with a small leather pouch attached to it. A written communication will be placed in the leather pouch.) is a token — a physical object which a locomotive driver is required to have or see before entering onto a particular section of single track.